UA 2255 then WN 1749 at Denver
Hayden → Denver → Dallas
Timetable, Denver time
08:15UA 2255 from Hayden at the gate
05:35WN 1749 to Dallas leaves the gate
21 h 20 apart on the timetable, overnight
WN 1749 leaves 21 h 20 after UA 2255 arrives on the timetable: more than half a day, so not a connection we count.