I hated when that would happen. A prayer isn't a soapbox, bro. There's been lots of reminds on that in the KM and other stuff. Keep prayers to under a minute.
The worst were at Bethel. Holy shit. For some brothers, that's the first time they've ever been able to do something in front of the whole bethel family, so the prayers would go on and on and on and on and on and on and on. Fuck you man. I've got like 10 minutes to eat and get to work.