DL 3764 then AS 254 at Seattle
Vancouver → Seattle → San Diego
Timetable, Seattle time
08:45DL 3764 from Vancouver at the gate
20:48AS 254 to San Diego leaves the gate
12 h 03 apart on the timetable
AS 254 leaves 12 h 03 after DL 3764 arrives on the timetable: more than half a day, so not a connection we count.