F9 2021 then DL 5480 at Detroit
Philadelphia → Detroit → Madison
Timetable, Detroit time
00:05F9 2021 from Philadelphia at the gate
20:45DL 5480 to Madison leaves the gate
20 h 40 apart on the timetable
DL 5480 leaves 20 h 40 after F9 2021 arrives on the timetable: more than half a day, so not a connection we count.