AA 2851 then AA 1916 at Charlotte
Kansas City → Charlotte → Las Vegas
Timetable, Charlotte time
18:19AA 2851 from Kansas City at the gate
18:17AA 1916 to Las Vegas leaves the gate
23 h 58 apart on the timetable, overnight
AA 1916 leaves 23 h 58 after AA 2851 arrives on the timetable: more than half a day, so not a connection we count.