DL 5436 then DL 5296 at JFK
Syracuse → New York → Buffalo
Timetable, New York time
13:09DL 5436 from Syracuse at the gate
13:00DL 5296 to Buffalo leaves the gate
23 h 51 apart on the timetable, overnight
DL 5296 leaves 23 h 51 after DL 5436 arrives on the timetable: more than half a day, so not a connection we count.