DL 1605 then DL 1391 at Detroit
Fort Lauderdale → Detroit → Philadelphia
Timetable, Detroit time
15:54DL 1605 from Fort Lauderdale at the gate
14:55DL 1391 to Philadelphia leaves the gate
23 h 01 apart on the timetable, overnight
DL 1391 leaves 23 h 01 after DL 1605 arrives on the timetable: more than half a day, so not a connection we count.