The latter is done via a separate area that Google currently calls a Space.
After the meeting was over, lots of people reported they didn't have the chat button so they couldn't submit questions to the meeting.
Howdy, We had a Teams Meeting with around 150 people and a bunch of people didn't have the Chat button to click in the action bar to open the side panel.
Does anyone know if this is a known issue or why it might have happened and if there's a way to make it not happen again? Teams is currently available for free so if users do 'sign up' they will have better features.