AA 3689 then LF 510 at Phoenix
Memphis → Phoenix → San Diego
Timetable, Phoenix time
10:16AA 3689 from Memphis at the gate
10:55LF 510 to San Diego leaves the gate
39 min apart on the timetable
The last days
AA 3689 and LF 510 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.