AA 6017 then AA 5247 at Philadelphia
Buffalo → Philadelphia → Burlington
Timetable, Philadelphia time
07:42AA 6017 from Buffalo at the gate
10:36AA 5247 to Burlington leaves the gate
2 h 54 apart on the timetable
The last days
AA 6017 and AA 5247 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.