UA 4696 then WN 1749 at Denver
Colorado Springs → Denver → Dallas
Timetable, Denver time
08:11UA 4696 from Colorado Springs at the gate
06:05WN 1749 to Dallas leaves the gate
21 h 54 apart on the timetable, overnight
WN 1749 leaves 21 h 54 after UA 4696 arrives on the timetable: more than half a day, so not a connection we count.