AA 709 then AA 5437 at Philadelphia
Jacksonville → Philadelphia → Washington National
Timetable, Philadelphia time
13:13AA 709 from Jacksonville at the gate
16:11AA 5437 to Washington National leaves the gate
2 h 58 apart on the timetable
The last days
AA 709 and AA 5437 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.