DL 3968 then AS 660 at Seattle
Vancouver → Seattle → Missoula
Timetable, Seattle time
16:53DL 3968 from Vancouver at the gate
12:57AS 660 to Missoula leaves the gate
20 h 04 apart on the timetable, overnight
AS 660 leaves 20 h 04 after DL 3968 arrives on the timetable: more than half a day, so not a connection we count.