AA 5415 then AA 9784 at Philadelphia
Bangor → Philadelphia → Boston
Timetable, Philadelphia time
08:07AA 5415 from Bangor at the gate
09:02AA 9784 to Boston leaves the gate
55 min apart on the timetable
The last days
AA 5415 and AA 9784 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.