DL 876 then UA 1001 at Detroit
Santa Ana → Detroit → Denver
Timetable, Detroit time
19:40DL 876 from Santa Ana at the gate
15:24UA 1001 to Denver leaves the gate
19 h 44 apart on the timetable, overnight
UA 1001 leaves 19 h 44 after DL 876 arrives on the timetable: more than half a day, so not a connection we count.