AA 9913 then AA 6264 at LAX
Tucson → Los Angeles → Denver
Timetable, Los Angeles time
17:40AA 9913 from Tucson at the gate
18:39AA 6264 to Denver leaves the gate
59 min apart on the timetable
The last days
AA 9913 and AA 6264 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.