F9 2021 then DL 5446 at Detroit
Philadelphia → Detroit → Cincinnati
Timetable, Detroit time
00:05F9 2021 from Philadelphia at the gate
14:00DL 5446 to Cincinnati leaves the gate
13 h 55 apart on the timetable
DL 5446 leaves 13 h 55 after F9 2021 arrives on the timetable: more than half a day, so not a connection we count.