UA 4739 then WN 1749 at Denver
Colorado Springs → Denver → Dallas
Timetable, Denver time
08:51UA 4739 from Colorado Springs at the gate
05:35WN 1749 to Dallas leaves the gate
20 h 44 apart on the timetable, overnight
WN 1749 leaves 20 h 44 after UA 4739 arrives on the timetable: more than half a day, so not a connection we count.