AA 3747 then WN 1722 at Phoenix
Grand Junction → Phoenix → Las Vegas
Timetable, Phoenix time
20:38AA 3747 from Grand Junction at the gate
18:20WN 1722 to Las Vegas leaves the gate
21 h 42 apart on the timetable, overnight
WN 1722 leaves 21 h 42 after AA 3747 arrives on the timetable: more than half a day, so not a connection we count.