UA 5935 then WN 1749 at Denver
Omaha → Denver → Dallas
Timetable, Denver time
12:29UA 5935 from Omaha at the gate
05:35WN 1749 to Dallas leaves the gate
17 h 06 apart on the timetable, overnight
WN 1749 leaves 17 h 06 after UA 5935 arrives on the timetable: more than half a day, so not a connection we count.