DL 2398 then B6 1537 at JFK
Atlanta → New York → Santiago (Dominican Republic)
Timetable, New York time
17:36DL 2398 from Atlanta at the gate
06:00B6 1537 to Santiago (Dominican Republic) leaves the gate
12 h 24 apart on the timetable, overnight
B6 1537 leaves 12 h 24 after DL 2398 arrives on the timetable: more than half a day, so not a connection we count.