AA 1740 then AA 5585 at Charlotte
Las Vegas → Charlotte → Roanoke
Timetable, Charlotte time
14:20AA 1740 from Las Vegas at the gate
11:30AA 5585 to Roanoke leaves the gate
21 h 10 apart on the timetable, overnight
AA 5585 leaves 21 h 10 after AA 1740 arrives on the timetable: more than half a day, so not a connection we count.