WN 255 then WN 1722 at Phoenix
San Diego → Phoenix → Las Vegas
Timetable, Phoenix time
19:30WN 255 from San Diego at the gate
18:20WN 1722 to Las Vegas leaves the gate
22 h 50 apart on the timetable, overnight
WN 1722 leaves 22 h 50 after WN 255 arrives on the timetable: more than half a day, so not a connection we count.