Earlier quoted context omitted.
The absolute worst is being in an office with several people who are on the same call as you at their own desks. You can neither listen to the call nor the person near you speaking and you hear everything the say with a 2 second delay.
In our office, this created in-group out-group dynamic within the meeting each time. The in-person people were making jokes to each other and commenting stuff while online people had no idea. So, result is that the same meeting have one group coordinating with muted microphones and other oblivious. Perfect. It did not created some kind of real split (yet), but the potential is super clear and it is pretty much guaran…
Honestly, given the choice an all face to face meeting is the best. However, with any kind of cross location collaboration this quickly becomes impossible (even before WFH). An all online (ideally in their own workspace) meeting is far better than any other mixed mode alternative.