DL 4990 then DL 4159 at Detroit
Birmingham (Alabama) → Detroit → Appleton
Timetable, Detroit time
20:50DL 4990 from Birmingham (Alabama) at the gate
20:00DL 4159 to Appleton leaves the gate
23 h 10 apart on the timetable, overnight
DL 4159 leaves 23 h 10 after DL 4990 arrives on the timetable: more than half a day, so not a connection we count.