WN 757 then WN 2749 at Denver
Cleveland → Denver → Oklahoma City
Timetable, Denver time
18:45WN 757 from Cleveland at the gate
18:15WN 2749 to Oklahoma City leaves the gate
23 h 30 apart on the timetable, overnight
WN 2749 leaves 23 h 30 after WN 757 arrives on the timetable: more than half a day, so not a connection we count.