AA 3045 then AA 1198 at Boston
New York LaGuardia → Boston → Philadelphia
Timetable, Boston time
08:55AA 3045 from New York LaGuardia at the gate
16:00AA 1198 to Philadelphia leaves the gate
7 h 05 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 3045 and AA 1198 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.