DL 5232 then DL 2331 at Detroit
Memphis → Detroit → Philadelphia
Timetable, Detroit time
20:50DL 5232 from Memphis at the gate
10:10DL 2331 to Philadelphia leaves the gate
13 h 20 apart on the timetable, overnight
DL 2331 leaves 13 h 20 after DL 5232 arrives on the timetable: more than half a day, so not a connection we count.