AA 3199 then AS 1837 at San Francisco
Phoenix → San Francisco → Los Angeles
Timetable, San Francisco time
14:01AA 3199 from Phoenix at the gate
20:08AS 1837 to Los Angeles leaves the gatealso QR 2001, QR 2092, TN 2349, QR 3403, QR 8861
6 h 07 apart on the timetable
The last days
AA 3199 and AS 1837 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.