AS 2139 then AA 1845 at San Francisco
Everett → San Francisco → Philadelphia
Timetable, San Francisco time
09:21AS 2139 from Everett at the gatealso QR 3373, FJ 5867, AA 7414
09:58AA 1845 to Philadelphia leaves the gatealso EI 7276
37 min apart on the timetable
The last days
AS 2139 and AA 1845 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.