DL 3848 then DL 1454 at Detroit
Milwaukee → Detroit → Washington National
Timetable, Detroit time
15:28DL 3848 from Milwaukee at the gate
14:59DL 1454 to Washington National leaves the gate
23 h 31 apart on the timetable, overnight
DL 1454 leaves 23 h 31 after DL 3848 arrives on the timetable: more than half a day, so not a connection we count.