DL 1113 then UA 4749 at Detroit
Denver → Detroit → Chicago O'Hare
Timetable, Detroit time
15:19DL 1113 from Denver at the gate
10:48UA 4749 to Chicago O'Hare leaves the gate
19 h 29 apart on the timetable, overnight
UA 4749 leaves 19 h 29 after DL 1113 arrives on the timetable: more than half a day, so not a connection we count.