F9 2021 then DL 3801 at Detroit
Philadelphia → Detroit → Omaha
Timetable, Detroit time
00:05F9 2021 from Philadelphia at the gate
16:00DL 3801 to Omaha leaves the gate
15 h 55 apart on the timetable
DL 3801 leaves 15 h 55 after F9 2021 arrives on the timetable: more than half a day, so not a connection we count.