F9 2021 then DL 369 at Detroit
Philadelphia → Detroit → San Diego
Timetable, Detroit time
00:05F9 2021 from Philadelphia at the gate
16:33DL 369 to San Diego leaves the gate
16 h 28 apart on the timetable
DL 369 leaves 16 h 28 after F9 2021 arrives on the timetable: more than half a day, so not a connection we count.