DL 1323 then AA 4518 at Miami
Atlanta → Miami → Louisville
Timetable, Miami time
16:00DL 1323 from Atlanta at the gate
15:33AA 4518 to Louisville leaves the gate
23 h 33 apart on the timetable, overnight
AA 4518 leaves 23 h 33 after DL 1323 arrives on the timetable: more than half a day, so not a connection we count.