DL 5601 then DL 5679 at Boston
Cincinnati → Boston → Louisville
Timetable, Boston time
14:10DL 5601 from Cincinnati at the gate
09:55DL 5679 to Louisville leaves the gate
19 h 45 apart on the timetable, overnight
DL 5679 leaves 19 h 45 after DL 5601 arrives on the timetable: more than half a day, so not a connection we count.