DL 5595 then DL 5679 at Boston
New York JFK → Boston → Louisville
Timetable, Boston time
14:54DL 5595 from New York JFK at the gate
09:55DL 5679 to Louisville leaves the gate
19 h 01 apart on the timetable, overnight
DL 5679 leaves 19 h 01 after DL 5595 arrives on the timetable: more than half a day, so not a connection we count.