AA 4389 then DL 5679 at Boston
Columbus (Ohio) → Boston → Louisville
Timetable, Boston time
13:57AA 4389 from Columbus (Ohio) at the gate
09:55DL 5679 to Louisville leaves the gate
19 h 58 apart on the timetable, overnight
DL 5679 leaves 19 h 58 after AA 4389 arrives on the timetable: more than half a day, so not a connection we count.