DL 1870 then DL 2398 at Atlanta
Grand Cayman → Atlanta → New York JFK
Timetable, Atlanta time
16:30DL 1870 from Grand Cayman at the gate
15:16DL 2398 to New York JFK leaves the gate
22 h 46 apart on the timetable, overnight
DL 2398 leaves 22 h 46 after DL 1870 arrives on the timetable: more than half a day, so not a connection we count.