[snarf21]

These are are all essential but I think the only thing missing is that the person leading the meeting has to be controlling, their only job is to make the meeting productive through any means necessary. It is okay to cut people off and have that kick to offline or a separate meeting. The leader must control the meeting.

I think one thing that is missing in the Slack/no meeting discussions is that you can resolve things just as poorly (or worse!) via email/Slack/Teams. Effective communication is really really hard and requires significant effort.