DL 4166 then DL 1665 at Detroit
Appleton → Detroit → Chicago O'Hare
Timetable, Detroit time
20:09DL 4166 from Appleton at the gate
19:56DL 1665 to Chicago O'Hare leaves the gate
23 h 47 apart on the timetable, overnight
DL 1665 leaves 23 h 47 after DL 4166 arrives on the timetable: more than half a day, so not a connection we count.