DL 3848 then DL 5037 at Detroit
Milwaukee → Detroit → Washington
Timetable, Detroit time
15:28DL 3848 from Milwaukee at the gate
14:40DL 5037 to Washington leaves the gate
23 h 12 apart on the timetable, overnight
DL 5037 leaves 23 h 12 after DL 3848 arrives on the timetable: more than half a day, so not a connection we count.