WN 452 then WN 2278 at Phoenix
Baltimore → Phoenix → Las Vegas
Timetable, Phoenix time
13:10WN 452 from Baltimore at the gate
12:55WN 2278 to Las Vegas leaves the gate
23 h 45 apart on the timetable, overnight
WN 2278 leaves 23 h 45 after WN 452 arrives on the timetable: more than half a day, so not a connection we count.