LH 442 then DL 1371 at Detroit
Frankfurt am Main → Detroit → St Louis
Timetable, Detroit time
14:15LH 442 from Frankfurt am Main at the gate
12:40DL 1371 to St Louis leaves the gate
22 h 25 apart on the timetable, overnight
DL 1371 leaves 22 h 25 after LH 442 arrives on the timetable: more than half a day, so not a connection we count.