I recently flew (2019) from MCO --> ATL --> CVG with a 44 minute layover and back with a 50 minute layover in ATL. It takes about 10 minutes to get off the plane if you sit in the back of the plane and if your first flight is delayed you will miss the second flight. ATL is fairly easy to navigate each terminal is a quarter mile apart (3 - 5 minute walk/1 minute bus ride) with the train being on the first level then the terminals being on the upper level going from T, A, B, C, D, E, F(International). If you are worried about being delayed then book a longer layover I would in the future after experiencing the quick layover.