AA 2644 then AA 3951 at Phoenix
Philadelphia → Phoenix → Tucson
Timetable, Phoenix time
12:00AA 2644 from Philadelphia at the gate
14:36AA 3951 to Tucson leaves the gate
2 h 36 apart on the timetable
The last days
AA 2644 and AA 3951 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.