B6 478 then DL 5299 at JFK
Jacksonville → New York → Rochester
Timetable, New York time
18:00B6 478 from Jacksonville at the gate
14:45DL 5299 to Rochester leaves the gate
20 h 45 apart on the timetable, overnight
DL 5299 leaves 20 h 45 after B6 478 arrives on the timetable: more than half a day, so not a connection we count.