AA 5409 then AA 509 at Philadelphia
Memphis → Philadelphia → Tampa
Timetable, Philadelphia time
11:30AA 5409 from Memphis at the gate
15:35AA 509 to Tampa leaves the gate
4 h 05 apart on the timetable
The last days
AA 5409 and AA 509 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.