DL 1492 then DL 3845 at Salt Lake City
St Louis → Salt Lake City → Great Falls
Timetable, Salt Lake City time
21:18DL 1492 from St Louis at the gate
20:52DL 3845 to Great Falls leaves the gate
23 h 34 apart on the timetable, overnight
DL 3845 leaves 23 h 34 after DL 1492 arrives on the timetable: more than half a day, so not a connection we count.