That occurred to me as well. Also, it seemed notable that the one meeting that was not marked by connectivity problems seemed like the one with the audience least likely to have regulatory implications (SFPD/SFFD).
I suppose, charitably, that was the last one, so maybe they'd gotten around to complaining to the telco by that point :)
Somewhere it was mentioned that all these meetings were being conducted by different sets of Cruise team members… could have just been that the person presenting at those meetings didn't have the same connectivity issues.