AA 2780 then AA 369 at Boston
Philadelphia → Boston → New York LaGuardia
Timetable, Boston time
10:25AA 2780 from Philadelphia at the gate
13:03AA 369 to New York LaGuardia leaves the gate
2 h 38 apart on the timetable
Boston’s board gives an arrival time for only about 59% of its flights, so many days show no gate time.
The last days
AA 2780 and AA 369 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.