LH 442 then DL 3964 at Detroit
Frankfurt am Main → Detroit → Grand Rapids
Timetable, Detroit time
14:15LH 442 from Frankfurt am Main at the gate
09:00DL 3964 to Grand Rapids leaves the gate
18 h 45 apart on the timetable, overnight
DL 3964 leaves 18 h 45 after LH 442 arrives on the timetable: more than half a day, so not a connection we count.