AA 5028 then AA 5128 at Philadelphia
Cleveland → Philadelphia → Nashville
Timetable, Philadelphia time
13:21AA 5028 from Cleveland at the gate
14:16AA 5128 to Nashville leaves the gate
55 min apart on the timetable
The last days
AA 5028 and AA 5128 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.