DL 3764 then AS 371 at Seattle
Vancouver → Seattle → Philadelphia
Timetable, Seattle time
08:45DL 3764 from Vancouver at the gate
21:28AS 371 to Philadelphia leaves the gate
12 h 43 apart on the timetable
AS 371 leaves 12 h 43 after DL 3764 arrives on the timetable: more than half a day, so not a connection we count.