After the time challenge, Sam and Tom claim they successfully guessed their time "to the second", and this is repeated once more in the episode, and then mentioned again on the Layover.
But a friend pointed out that their guess is 10:15, without further specifying seconds, and the on-screen clock when they check their guess says 10:15:19. This isn't on the minute, nor is it on the 30 second mark which is what they were on when they started the challenge, and given they only said 15 minutes past the hour without specifying seconds it seems to me that to be "to the second" you'd have to be on either :00 or (arguably) :30.
Are Sam and Tom misremembering and getting confused, or is either Sam'

