AA 3035 then QR 2607 at San Francisco
Philadelphia → San Francisco → Los Angeles
Timetable, San Francisco time
14:14AA 3035 from Philadelphia at the gate
18:10QR 2607 to Los Angeles leaves the gate
3 h 56 apart on the timetable
The last days
AA 3035 and QR 2607 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.