AA 6430 then CX 7996 at San Francisco
Phoenix → San Francisco → Seattle
Timetable, San Francisco time
10:01AA 6430 from Phoenix at the gatealso QR 7617
10:39CX 7996 to Seattle leaves the gate
38 min apart on the timetable
The last days
AA 6430 and CX 7996 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.