DL 5630 then AA 2854 at Charlotte
Boston → Charlotte → Louisville
Timetable, Charlotte time
16:31DL 5630 from Boston at the gate
14:39AA 2854 to Louisville leaves the gate
22 h 08 apart on the timetable, overnight
AA 2854 leaves 22 h 08 after DL 5630 arrives on the timetable: more than half a day, so not a connection we count.