F9 124 then DL 2398 at Atlanta
Montego Bay → Atlanta → New York JFK
Timetable, Atlanta time
19:40F9 124 from Montego Bay at the gate
15:16DL 2398 to New York JFK leaves the gate
19 h 36 apart on the timetable, overnight
DL 2398 leaves 19 h 36 after F9 124 arrives on the timetable: more than half a day, so not a connection we count.