DL 3875 then UA 3501 at Detroit
Columbus (Ohio) → Detroit → Chicago O'Hare
Timetable, Detroit time
17:07DL 3875 from Columbus (Ohio) at the gate
06:15UA 3501 to Chicago O'Hare leaves the gate
13 h 08 apart on the timetable, overnight
UA 3501 leaves 13 h 08 after DL 3875 arrives on the timetable: more than half a day, so not a connection we count.