UA 5490 then DL 751 at Denver
Oklahoma City → Denver → New York LaGuardia
Timetable, Denver time
12:27UA 5490 from Oklahoma City at the gate
11:20DL 751 to New York LaGuardia leaves the gate
22 h 53 apart on the timetable, overnight
DL 751 leaves 22 h 53 after UA 5490 arrives on the timetable: more than half a day, so not a connection we count.