AA 3308 then AA 2138 at Boston
Philadelphia → Boston → Dallas-Fort Worth
Timetable, Boston time
09:39AA 3308 from Philadelphia at the gate
12:56AA 2138 to Dallas-Fort Worth leaves the gate
3 h 17 apart on the timetable
The last days
AA 3308 and AA 2138 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.