AS 423 then DL 9964 at Seattle
Spokane → Seattle → Salt Lake City
Timetable, Seattle time
17:54AS 423 from Spokane at the gate
12:00DL 9964 to Salt Lake City leaves the gate
18 h 06 apart on the timetable, overnight
DL 9964 leaves 18 h 06 after AS 423 arrives on the timetable: more than half a day, so not a connection we count.