UA 2375 then WN 1749 at Denver
Portland (Oregon) → Denver → Dallas
Timetable, Denver time
12:30UA 2375 from Portland (Oregon) at the gate
05:35WN 1749 to Dallas leaves the gate
17 h 05 apart on the timetable, overnight
WN 1749 leaves 17 h 05 after UA 2375 arrives on the timetable: more than half a day, so not a connection we count.