WN 2403 then WN 577 at Phoenix
Chicago Midway → Phoenix → Las Vegas
Timetable, Phoenix time
13:10WN 2403 from Chicago Midway at the gate
12:55WN 577 to Las Vegas leaves the gate
23 h 45 apart on the timetable, overnight
WN 577 leaves 23 h 45 after WN 2403 arrives on the timetable: more than half a day, so not a connection we count.