DL 5356 then B6 503 at JFK
Norfolk → New York → San Juan
Timetable, New York time
10:00DL 5356 from Norfolk at the gate
09:44B6 503 to San Juan leaves the gate
23 h 44 apart on the timetable, overnight
B6 503 leaves 23 h 44 after DL 5356 arrives on the timetable: more than half a day, so not a connection we count.