Even the best speakers are given no leeway. We had one CO who was quite engaging until his first visit after the overlapping crap. He seemed to have lost his spark; I think because he realized what a predicament he was in.
The best talks were the ones made up off outline, or the ones where a better off speaker just gave a traveligue of his last vacation.
Remember Knorr? Running late giving facts about everything? He would "ask" if he should continue, and what else could you do but clap in agreement and wonder when he would shut up