AA 1489 then AS 591 at San Francisco
Charlotte → San Francisco → Seattle
Timetable, San Francisco time
15:43AA 1489 from Charlotte at the gate
18:48AS 591 to Seattle leaves the gatealso QF 3787
3 h 05 apart on the timetable
The last days
AA 1489 and AS 591 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.