AA 4171 then AA 1813 at Phoenix
Ontario → Phoenix → San Diego
Timetable, Phoenix time
11:02AA 4171 from Ontario at the gate
11:49AA 1813 to San Diego leaves the gate
47 min apart on the timetable
The last days
AA 4171 and AA 1813 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.