tigger, if you want a revealing experience, suggest a discussion on a vague waffly subject such as "Leadership", take the chair, and get some rules from the floor. Your first rule should be written up thus: "Only one person to speak at a time".
Then when, as inevitably, you get chaos with multiple conversations going on, just go completely quiet until it becomes painfully evident what you are doing.
People are very tolerant of bad manners in meetings, and talking sotto voce to somebody else while you do not have the floor is extremely bad-mannered.
I once said to a meeting, "if you can't manage to listen politely to the speaker without chatting among yourselves, then I am going to leave"
They couldn't, and I did leave. My contribution was essential, so another meeting had to be arranged. It was much better-mannered.