AA 3807 then DL 5679 at Boston
Cincinnati → Boston → Louisville
Timetable, Boston time
10:48AA 3807 from Cincinnati at the gate
09:55DL 5679 to Louisville leaves the gate
23 h 07 apart on the timetable, overnight
DL 5679 leaves 23 h 07 after AA 3807 arrives on the timetable: more than half a day, so not a connection we count.