UA 476 then WN 1749 at Denver
Austin → Denver → Dallas
Timetable, Denver time
10:00UA 476 from Austin at the gate
05:35WN 1749 to Dallas leaves the gate
19 h 35 apart on the timetable, overnight
WN 1749 leaves 19 h 35 after UA 476 arrives on the timetable: more than half a day, so not a connection we count.