When I was on Shark Tank our pitch took a little over an hour. Granted we had a complicated audio requirements that took a while to set up, but the pitch lasted a long time.

The beginning 1-minute pitch is memorized, but everything after that when sharks are asking questions is totally free-for-all.

I was surprised and impressed by the professionalism and the speed of the production team. They had it down to almost an assembly-line.