DL 3848 then DL 1391 at Detroit
Milwaukee → Detroit → Philadelphia
Timetable, Detroit time
15:28DL 3848 from Milwaukee at the gate
14:55DL 1391 to Philadelphia leaves the gate
23 h 27 apart on the timetable, overnight
DL 1391 leaves 23 h 27 after DL 3848 arrives on the timetable: more than half a day, so not a connection we count.