DL 4645 then DL 1371 at Detroit
White Plains → Detroit → St Louis
Timetable, Detroit time
14:28DL 4645 from White Plains at the gate
12:40DL 1371 to St Louis leaves the gate
22 h 12 apart on the timetable, overnight
DL 1371 leaves 22 h 12 after DL 4645 arrives on the timetable: more than half a day, so not a connection we count.