DL 1492 then DL 3985 at Salt Lake City
St Louis → Salt Lake City → Hailey
Timetable, Salt Lake City time
21:18DL 1492 from St Louis at the gate
21:05DL 3985 to Hailey leaves the gate
23 h 47 apart on the timetable, overnight
DL 3985 leaves 23 h 47 after DL 1492 arrives on the timetable: more than half a day, so not a connection we count.