AA 5564 then AA 1916 at Charlotte
Harrisburg → Charlotte → Las Vegas
Timetable, Charlotte time
18:46AA 5564 from Harrisburg at the gate
18:17AA 1916 to Las Vegas leaves the gate
23 h 31 apart on the timetable, overnight
AA 1916 leaves 23 h 31 after AA 5564 arrives on the timetable: more than half a day, so not a connection we count.