DL 3790 then AS 660 at Seattle
Spokane → Seattle → Missoula
Timetable, Seattle time
19:05DL 3790 from Spokane at the gate
12:57AS 660 to Missoula leaves the gate
17 h 52 apart on the timetable, overnight
AS 660 leaves 17 h 52 after DL 3790 arrives on the timetable: more than half a day, so not a connection we count.