DL 5674 then DL 5679 at Boston
Cleveland → Boston → Louisville
Timetable, Boston time
13:15DL 5674 from Cleveland at the gate
09:55DL 5679 to Louisville leaves the gate
20 h 40 apart on the timetable, overnight
DL 5679 leaves 20 h 40 after DL 5674 arrives on the timetable: more than half a day, so not a connection we count.