UA 5490 then WN 1749 at Denver
Oklahoma City → Denver → Dallas
Timetable, Denver time
12:27UA 5490 from Oklahoma City at the gate
06:05WN 1749 to Dallas leaves the gate
17 h 38 apart on the timetable, overnight
WN 1749 leaves 17 h 38 after UA 5490 arrives on the timetable: more than half a day, so not a connection we count.