F9 2021 then DL 4889 at Detroit
Philadelphia → Detroit → Northwest Arkansas
Timetable, Detroit time
00:05F9 2021 from Philadelphia at the gate
15:50DL 4889 to Northwest Arkansas leaves the gate
15 h 45 apart on the timetable
DL 4889 leaves 15 h 45 after F9 2021 arrives on the timetable: more than half a day, so not a connection we count.