AA 5585 then AA 519 at Charlotte
Louisville → Charlotte → Nashville
Timetable, Charlotte time
20:41AA 5585 from Louisville at the gate
16:45AA 519 to Nashville leaves the gate
20 h 04 apart on the timetable, overnight
AA 519 leaves 20 h 04 after AA 5585 arrives on the timetable: more than half a day, so not a connection we count.