AS 2139 then QF 4415 at San Francisco
Everett → San Francisco → Los Angeles
Timetable, San Francisco time
09:21AS 2139 from Everett at the gatealso QR 3373, FJ 5867, AA 7414
10:40QF 4415 to Los Angeles leaves the gatealso BA 4596, AA 6428
1 h 19 apart on the timetable
The last days
AS 2139 and QF 4415 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.