AA 5457 then AA 1916 at Charlotte
Manchester → Charlotte → Las Vegas
Timetable, Charlotte time
18:18AA 5457 from Manchester at the gate
18:17AA 1916 to Las Vegas leaves the gate
23 h 59 apart on the timetable, overnight
AA 1916 leaves 23 h 59 after AA 5457 arrives on the timetable: more than half a day, so not a connection we count.