DL 8939 then QR 2103 at San Francisco
Phoenix → San Francisco → Los Angeles
Timetable, San Francisco time
14:57DL 8939 from Phoenix at the gate
22:06QR 2103 to Los Angeles leaves the gate
7 h 09 apart on the timetable
The last days
DL 8939 and QR 2103 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.