WN 893 then DL 751 at Denver
Oklahoma City → Denver → New York LaGuardia
Timetable, Denver time
18:35WN 893 from Oklahoma City at the gate
13:00DL 751 to New York LaGuardia leaves the gate
18 h 25 apart on the timetable, overnight
DL 751 leaves 18 h 25 after WN 893 arrives on the timetable: more than half a day, so not a connection we count.