DL 2331 then DL 5446 at Detroit
Philadelphia → Detroit → Cincinnati
Timetable, Detroit time
14:10DL 2331 from Philadelphia at the gate
14:00DL 5446 to Cincinnati leaves the gate
23 h 50 apart on the timetable, overnight
DL 5446 leaves 23 h 50 after DL 2331 arrives on the timetable: more than half a day, so not a connection we count.