DL 1447 then WN 1722 at Phoenix
Salt Lake City → Phoenix → Las Vegas
Timetable, Phoenix time
09:34DL 1447 from Salt Lake City at the gate
22:05WN 1722 to Las Vegas leaves the gate
12 h 31 apart on the timetable
WN 1722 leaves 12 h 31 after DL 1447 arrives on the timetable: more than half a day, so not a connection we count.