AA 2618 then DL 5679 at Boston
Charlotte → Boston → Louisville
Timetable, Boston time
14:04AA 2618 from Charlotte at the gate
09:55DL 5679 to Louisville leaves the gate
19 h 51 apart on the timetable, overnight
DL 5679 leaves 19 h 51 after AA 2618 arrives on the timetable: more than half a day, so not a connection we count.