[emmelaich]

Don't rely exclusively on async communications. It can be a huge time waster.

Have your team in vidcon regularly, scheduled.

Whether for strictly work or social doesn't matter. If social, leave a big window of time that people can come and go anytime they like without explanation.

You can even leave a camera running in each location for a while just for the occasional hello / wave. (Just make sure the camera is marked as and understood to be live)