While watching a symphony orchestra rehearsal in the '80s, I saw an incident that still makes me think, "Technically, that's correct, but..."
Per union requirements, one of the orchestra's musicians was the designated timekeeper. The conductor was telling a section what corrections he wanted to hear, when the timekeeper called out, "Time!"
The conductor stopped in mid-sentence, and the musicians went on their scheduled break. Technically, this is correct. No conductor should take advantage of an orchestra, and musicians should have their scheduled breaks.
Still...Having to stop in mid-sentence, though? That strikes me as petty.
