AA 765 then AA 6436 at Phoenix
Philadelphia → Phoenix → Tucson
Timetable, Phoenix time
15:05AA 765 from Philadelphia at the gate
21:50AA 6436 to Tucson leaves the gate
6 h 45 apart on the timetable
The last days
AA 765 and AA 6436 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.