I noticed that during prelims, there was a yellow countdown clock running in the Alamodome during each performance (the remaining time made it easy to tell whether the bit-that-sounds-like-a-finale really was.) During finals, the clock stayed at 0 after the pre-show countdown. Are the timing rules different for finals? Or was that a mistake?
(Speaking of mistakes, the stadium announcer saying that Reagan was there for prelims on Tuesday was super awkward, especially given the electronics fiasco.)