DL 876 then UA 5381 at Detroit
Santa Ana → Detroit → Chicago O'Hare
Timetable, Detroit time
19:40DL 876 from Santa Ana at the gate
14:09UA 5381 to Chicago O'Hare leaves the gate
18 h 29 apart on the timetable, overnight
UA 5381 leaves 18 h 29 after DL 876 arrives on the timetable: more than half a day, so not a connection we count.