DL 1546 then DL 1371 at Detroit
Baltimore → Detroit → St Louis
Timetable, Detroit time
13:55DL 1546 from Baltimore at the gate
12:40DL 1371 to St Louis leaves the gate
22 h 45 apart on the timetable, overnight
DL 1371 leaves 22 h 45 after DL 1546 arrives on the timetable: more than half a day, so not a connection we count.