F9 2021 then DL 4943 at Detroit
Philadelphia → Detroit → Toronto
Timetable, Detroit time
00:05F9 2021 from Philadelphia at the gate
21:35DL 4943 to Toronto leaves the gate
21 h 30 apart on the timetable
DL 4943 leaves 21 h 30 after F9 2021 arrives on the timetable: more than half a day, so not a connection we count.