Originally Posted by
mrboom
I never had this issue at any other airport or SC. Just landed in ATL with a 4 hour layover and they let us in without question.
layovers are specifically not included in the 3-hour rule, it's your initial departure, not your next segment
in any case, to answer OP's question, I have not run into this simply because I would never chose to arrive at the airport more than 60 minutes before departure.