AA 2673 then WN 1722 at Phoenix
Boston → Phoenix → Las Vegas
Timetable, Phoenix time
20:52AA 2673 from Boston at the gate
18:20WN 1722 to Las Vegas leaves the gate
21 h 28 apart on the timetable, overnight
WN 1722 leaves 21 h 28 after AA 2673 arrives on the timetable: more than half a day, so not a connection we count.