AA 5259 then AA 1274 at Philadelphia
Pittsburgh → Philadelphia → Raleigh-Durham
Timetable, Philadelphia time
17:27AA 5259 from Pittsburgh at the gate
21:25AA 1274 to Raleigh-Durham leaves the gate
3 h 58 apart on the timetable
The last days
AA 5259 and AA 1274 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.