DL 5745 then DL 5679 at Boston
New York LaGuardia → Boston → Louisville
Timetable, Boston time
12:25DL 5745 from New York LaGuardia at the gate
09:55DL 5679 to Louisville leaves the gate
21 h 30 apart on the timetable, overnight
DL 5679 leaves 21 h 30 after DL 5745 arrives on the timetable: more than half a day, so not a connection we count.