DL 3848 then DL 4646 at Detroit
Milwaukee → Detroit → Harrisburg
Timetable, Detroit time
15:28DL 3848 from Milwaukee at the gate
15:00DL 4646 to Harrisburg leaves the gate
23 h 32 apart on the timetable, overnight
DL 4646 leaves 23 h 32 after DL 3848 arrives on the timetable: more than half a day, so not a connection we count.