AA 2520 then AA 570 at Phoenix
Houston → Phoenix → San Diego
Timetable, Phoenix time
08:39AA 2520 from Houston at the gate
12:25AA 570 to San Diego leaves the gate
3 h 46 apart on the timetable
The last days
AA 2520 and AA 570 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.