That sucks. We pretty much schedule them back to back, all day long. In regular times, people were a little bit better about being cognizant of the fact that someone had to move to a different room/floor for their next one, but when we all started working from home, the stacked meetings got worse. And early/late ones became more of the norm. But for us, a couple minutes over can waterfall and ruin the day, so I put the cushion in for bio breaks, overages and time to dial into your next one. It’s ridiculous. I guess the 5/10 thing comes from a Harvard or Stanford business classes or someshit and people are good with it for a few months, then they start backsliding into old habits.