AA 5215 then AA 5866 at Philadelphia
Harrisburg → Philadelphia → Buffalo
Timetable, Philadelphia time
10:47AA 5215 from Harrisburg at the gate
13:35AA 5866 to Buffalo leaves the gate
2 h 48 apart on the timetable
The last days
AA 5215 and AA 5866 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.