DL 3968 then AS 571 at Seattle
Vancouver → Seattle → Ontario
Timetable, Seattle time
16:53DL 3968 from Vancouver at the gate
12:31AS 571 to Ontario leaves the gate
19 h 38 apart on the timetable, overnight
AS 571 leaves 19 h 38 after DL 3968 arrives on the timetable: more than half a day, so not a connection we count.