AA 5585 then AA 6120 at Charlotte
Louisville → Charlotte → Harrisburg
Timetable, Charlotte time
19:21AA 5585 from Louisville at the gate
16:50AA 6120 to Harrisburg leaves the gate
21 h 29 apart on the timetable, overnight
AA 6120 leaves 21 h 29 after AA 5585 arrives on the timetable: more than half a day, so not a connection we count.