AS 725 then LA 7046 at San Francisco
Seattle → San Francisco → Boston
Timetable, San Francisco time
09:41AS 725 from Seattle at the gatealso QR 2163, QR 2973, CX 7865, QR 8864
12:40LA 7046 to Boston leaves the gate
2 h 59 apart on the timetable
The last days
AS 725 and LA 7046 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.