AA 2103 then DL 8937 at Phoenix
Dallas-Fort Worth → Phoenix → San Diego
Timetable, Phoenix time
11:20AA 2103 from Dallas-Fort Worth at the gate
15:00DL 8937 to San Diego leaves the gate
3 h 40 apart on the timetable
The last days
AA 2103 and DL 8937 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.