DL 5771 then DL 1391 at Detroit
Indianapolis → Detroit → Philadelphia
Timetable, Detroit time
18:14DL 5771 from Indianapolis at the gate
14:55DL 1391 to Philadelphia leaves the gate
20 h 41 apart on the timetable, overnight
DL 1391 leaves 20 h 41 after DL 5771 arrives on the timetable: more than half a day, so not a connection we count.