UA 720 then WN 1708 at Denver
Las Vegas → Denver → Milwaukee
Timetable, Denver time
18:10UA 720 from Las Vegas at the gate
17:30WN 1708 to Milwaukee leaves the gate
23 h 20 apart on the timetable, overnight
WN 1708 leaves 23 h 20 after UA 720 arrives on the timetable: more than half a day, so not a connection we count.