AA 5585 then AA 6470 at Charlotte
Louisville → Charlotte → Knoxville
Timetable, Charlotte time
19:21AA 5585 from Louisville at the gate
16:20AA 6470 to Knoxville leaves the gate
20 h 59 apart on the timetable, overnight
AA 6470 leaves 20 h 59 after AA 5585 arrives on the timetable: more than half a day, so not a connection we count.