DL 2236 then WN 1582 at Detroit
Salt Lake City → Detroit → St Louis
Timetable, Detroit time
15:20DL 2236 from Salt Lake City at the gate
14:55WN 1582 to St Louis leaves the gate
23 h 35 apart on the timetable, overnight
WN 1582 leaves 23 h 35 after DL 2236 arrives on the timetable: more than half a day, so not a connection we count.