I've done some dozens of Events over the last year and a half. I'm moderating a symposium right now and have had multiple attendees join with live audio. Started while we were in a practice session. I have an attendee connection running for confidence and was hearing someone. I would say at least 3 our of only 30 attendees joined with audio passing through into the Event. I had to drill down into the Attendee panel and mute them. I don't recall ever seeing this before. Any ideas?