B6 1018 then DL 5679 at Boston
New York JFK → Boston → Louisville
Timetable, Boston time
10:41B6 1018 from New York JFK at the gate
09:55DL 5679 to Louisville leaves the gate
23 h 14 apart on the timetable, overnight
DL 5679 leaves 23 h 14 after B6 1018 arrives on the timetable: more than half a day, so not a connection we count.