UA 728 then WN 1749 at Denver
Columbus (Ohio) → Denver → Dallas
Timetable, Denver time
10:05UA 728 from Columbus (Ohio) at the gate
06:05WN 1749 to Dallas leaves the gate
20 h apart on the timetable, overnight
WN 1749 leaves 20 h after UA 728 arrives on the timetable: more than half a day, so not a connection we count.