I do connect 5 minutes past, but after the start of the meeting, just to miss the 'how was your weekend', 'let's do an introduction round' and other nonsense (the email invite already has intro's; i know people don't read, but that's not my problem).

We mostly turned our internal and partner meetings around these days; meetings are organised and distributed by who thinks they are needed, everyone who could be needed is included (they basically have to answer when called upon during the meeting; that also keeps the meetings within bounds as no-one is going to answer anymore once the time passed) but they are called in only when needed which is to say, almost never in reality. This showed us the enormous waste of these meetings before.