DL 1407 then DL 1541 at Detroit
Raleigh-Durham → Detroit → St Louis
Timetable, Detroit time
20:48DL 1407 from Raleigh-Durham at the gate
19:45DL 1541 to St Louis leaves the gate
22 h 57 apart on the timetable, overnight
DL 1541 leaves 22 h 57 after DL 1407 arrives on the timetable: more than half a day, so not a connection we count.