AA 4070 then AA 3199 at Phoenix
Tucson → Phoenix → San Diego
Timetable, Phoenix time
10:51AA 4070 from Tucson at the gate
11:45AA 3199 to San Diego leaves the gate
54 min apart on the timetable
The last days
AA 4070 and AA 3199 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.