AA 6514 then AA 4952 at Phoenix
Tucson → Phoenix → Denver
Timetable, Phoenix time
15:32AA 6514 from Tucson at the gate
19:54AA 4952 to Denver leaves the gate
4 h 22 apart on the timetable
The last days
AA 6514 and AA 4952 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.