UA 779 then WN 406 at Denver
Austin → Denver → Las Vegas
Timetable, Denver time
12:10UA 779 from Austin at the gate
12:05WN 406 to Las Vegas leaves the gate
23 h 55 apart on the timetable, overnight
WN 406 leaves 23 h 55 after UA 779 arrives on the timetable: more than half a day, so not a connection we count.