· 8 mins

5 Situations when synchronous communication is a must (July 2026)

In this article we explore the importance of synchronous communication and 5 examples of situations when it’s irreplaceable.

Avatar of Hiba Amin Hiba Amin

Think of the last romcom you watched. Likely, the couple broke up near the end of the movie over a silly, avoidable misunderstanding (and then they reunited, of course). This clichéd movie trope relies on poor communication to create drama and good communication to resolve it. You might say that clear communication is both the bane and saviour of many romcoms, and the latter is certainly true for workplaces.

Communication is key to the success of any team, whether they’re a few chairs or cities apart. Good communication prevents misunderstandings and the chaos that comes with it, which is exactly what you want for you and your team. There are two main types of communication that contribute to your team’s communication strategy: synchronous and asynchronous (async) communication.

TLDR:

  • Use sync for one-on-ones, team building, difficult conversations, crisis response, and onboarding.
  • Async leaves room for ambiguity in high-stakes situations; real-time lets both parties ask and answer questions on the spot.
  • Slack reports users spend over 9 hours per workday connected, with 90 minutes of active use. Sync time has real costs.
  • The most reliable communication strategy pairs synchronous and async rather than replacing one with the other.

So what’s the difference between synchronous vs. asynchronous communication?

Synchronous communication is real-time communication where you can exchange information with others immediately. 

Asynchronous communication is the opposite: it’s communication that doesn’t require an immediate response. You can think of it like having a delay between exchanging information (like a text message vs. phone call).

Attribute

Synchronous

Asynchronous

Definition

Real-time exchange; both parties communicate at the same time

Delayed exchange; parties respond on their own schedule

Response time

Immediate

Hours or days later

Examples

Video calls, in-person meetings, phone calls, live messaging

Email, Slack messages, recorded videos, shared docs

Best for

One-on-ones, difficult conversations, onboarding, crisis response, team building

Status updates, documentation, cross-time-zone collaboration, focused work

Main challenge

Interrupts focus time; hard to schedule across time zones

Slower decisions; ambiguity in high-stakes situations

A clean, modern illustration showing two people communicating: one on a video call (representing synchronous communication) and one typing a message with a delayed response indicator (representing asynchronous communication). Split composition, warm professional colors, flat design style, white background.

Despite more workplaces adopting remote life and making asynchronous communication the default, synchronous communication is equally important and in some cases, irreplaceable.

What is synchronous communication?

Synchronous communication is real-time communication, scheduled or impromptu, where you can exchange information with others immediately. The immediacy makes it helpful for discussing delicate or time-sensitive issues as well as complex projects. Plus, because it’s collaborative and interactive by nature, it’s good for brainstorming, one-on-one meetings, and socializing, whether online or in person.

What are examples of synchronous communication?

Definition aside, what exactly is synchronous communication in practice? Let’s take a look at some real-life examples:

  • In-person meetings
  • Walking to someone’s desk to ask a question
  • Water-cooler chats
  • Phone or video calls
  • Live webinars or classes
  • Instant messaging (when responses are immediate)
  • Voice over internal protocol

Although synchronous communication is necessary and helpful, it also has some challenges.

Communicating synchronously can make people on different work schedules or in different time zones feel out of the loop when they miss a meeting or impromptu team chat. It can also disrupt your schedule when you have to move your focus time to accommodate meetings. 

The expectation of having to respond to your colleagues instantly can be stressful and frustrating. In fact, Slack reported, “users spend more than 9 hours per workday connected to our service, including spending about 90 minutes per workday actively using Slack.” That’s at least 90 minutes per day dedicated to synchronous communication that could be spent on focus time, and 9 hours per day spent managing notifications and potentially feeling obligated to stay online outside of work hours (which some do to accommodate those varying work schedules and time zones).

It’s this kind of disruption that sometimes gives synchronous communication a bad rep and why a handful of companies are moving towards an async-first work culture.

While async communication is an important part of team collaboration, let’s take a look at why synchronous communication can’t be forgotten.

Why is synchronous communication important?

While working remotely, you might have noticed how convenient asynchronous communication can be:

  • You have more time to review a message before replying 
  • Everyone feels included in conversations despite time zones or physical presence
  • You can snooze notifications to have more uninterrupted focus time

Although we agree there are a lot of async communication benefits to asynchronous communication, there are some situations where synchronous communication is more effective. For example:

  • Work that requires immediate action and you don’t want your co-workers to wait hours, or even days, for a response when a quick phone call can do the trick.
  • More complicated projects, when async communication could cause delays and confusion. 
  • When you’re trying to connect and build connections with people

Since both communication styles have their benefits, the most effective way to collaborate, especially with a remote team, is a hybrid of the two. For example, if you have multiple stakeholders working on a complex project, a phone call or screen share can help clear up any confusion quickly and effectively. Then, you can use asynchronous communication tools to support your team members collaborate on their own time.

When to use synchronous communication: 5 situations where it’s irreplaceable

Don’t get us wrong, asynchronous communication is incredibly important to collaborate effectively as a team. But there are certain projects or situations when communicating synchronously with your team is invaluable and can’t be replaced. We’ve outlined 5 examples of these situations below.

1. One-on-one meetings

One-on-one meetings occur between a manager and direct report, peer-to-peer, or skip-level. They’re a time to chat about work projects, roadblocks, career development, and share two-way feedback. Most importantly though, they’re a time to build a foundation of trust, which is the key to working together effectively. 

Building that foundation would be difficult without taking the time to truly bond with your coworkers, learning about their weekend, finding commonalities, and for remote teams, humanizing the person on the other end of the screen. One-on-ones also give you the ability to listen to your colleagues’ voice and tone, and read their facial expressions and body language as you move through conversations. 

One-on-ones are more effective when they’re synchronous because they can help break the ice and build a better rapport with your direct reports, managers and peers. That doesn’t mean you can’t do some of the prep work asynchronously. An AI meeting assistant like Spinach can join the call and capture the decisions and action items in real time, so what gets agreed in the conversation doesn’t get lost once the call ends. If you’re looking to bring some structure to this time, take a look at these one-on-one templates to help you make the most of it:

9 one-on-one meeting templates

Looking for inspiration? Check out these 1:1 meeting templates to inspire your next conversation.

2. Team building

Team building helps you create meaningful, reliable connections with colleagues while increasing job satisfaction, motivation, and employee engagement. 

Whether it’s grabbing drinks after work or tuning into a virtual trivia night, the opportunity to talk to your teammates outside of work about non-work things is genuinely hard to replicate, especially if you’re working remotely. Team building activities are a good opportunity to learn new things about your colleagues, find common interests, and build lasting relationships. 

Now, imagine trying to do all of that through a discussion board. 🙅🏼

You may still have fun and learn new things about each other, but the conversation will be more rigid, jokes won’t hit the same, and people will be far less engaged when immediate responses aren’t guaranteed. Team building is more fruitful when it’s synchronous and teammates can interact easily in real-time.

3. Difficult conversations

Another fatal mistake in romcoms (and real-life) is breaking up over text. To deliver someone bad news over text is criticized as being inconsiderate and insincere. Now imagine putting an employee on a performance improvement plan over Slack. Sounds pretty bad, doesn’t it? When it comes time to having difficult conversations, it’s best to do it synchronously.

Here are some situations when talking in real-time is imperative:

With these kinds of conversations, asynchronous communication leaves room for ambiguity. That’s where misunderstandings are born. Instead, speak in real-time where both parties can ask and answer questions right away, preventing any confusion, or negative interpretations.

4. Crisis communication

Imagine superheroes planning how to save the world completely over email or text. Seems silly and inefficient, doesn’t it? The consequences of inefficient communication may not be as catastrophic at your workplace, but the principle is the same: don’t use asynchronous communication for urgent, complex matters that require collaboration. This way, all parties can contribute at the same time regardless of where they are and the situation won’t worsen because you waited too long for a response. You also won’t have to waste time waiting for approvals if everyone you need is in the same room (or video call).

5. Onboarding new employees

Joining a new company can be intimidating. Having a solid onboarding experience will help set up your new team members for success and make them feel more comfortable from day one. While there’s a lot you’ll be able to do asynchronously to help new employees get started, such as admin work, reviewing company information and welcome emails, at least some items on your onboarding checklist should include syncing up in real-time. This will help them integrate into the team faster.

When should you use synchronous communication instead of async for difficult conversations?

Use synchronous communication any time a conversation carries emotional weight or legal consequence: performance reviews, layoffs, resignations, or workplace conflict. Async leaves room for misinterpretation because neither party can ask clarifying questions in the moment, which is exactly how small misunderstandings compound into serious ones.

What’s the difference between synchronous and asynchronous communication for remote teams?

Synchronous communication happens in real time (video calls, phone calls, instant messaging with immediate replies) while asynchronous communication involves a delay, like email or recorded videos. Remote teams benefit most from pairing both: async for status updates and documentation, sync for anything requiring trust-building, fast decisions, or emotional nuance.

Can onboarding new employees be done fully asynchronously?

No. While admin work, welcome emails, and company documentation can be handled async, new hires integrate faster when at least some onboarding touchpoints happen in real time. Synchronous check-ins help new employees ask questions on the spot and build the early rapport that async messages struggle to replicate.

Sync vs. async communication: which should your team default to?

Neither should be your only default. Async works well for cross-timezone collaboration and focused work, but sync is irreplaceable for one-on-ones, crisis response, team building, and sensitive conversations. The most reliable approach pairs both, using each where it genuinely fits the situation rather than forcing one mode across the board.

How do you reduce meeting overload without losing the benefits of synchronous communication?

Reserve sync time for the five situations where it matters most: one-on-ones, team building, difficult conversations, crisis response, and onboarding, and shift everything else to async. Slack’s own data shows users spend over nine hours per workday connected to the service, with roughly 90 minutes of active use, so protecting focus time means being deliberate about which conversations actually require real-time presence.

What you should do next

Next, here are some things you can do now that you've read this article:

  1. Our library of meeting agenda templates is designed to help you run more effective meetings.
  2. Learn more about Spinach and how it can help you run a high performing org.
  3. If you found this article helpful, please share it with others on Linkedin or X (Twitter)
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