F9 2539 then DL 2398 at Atlanta
Columbus (Ohio) → Atlanta → New York JFK
Timetable, Atlanta time
21:35F9 2539 from Columbus (Ohio) at the gate
15:16DL 2398 to New York JFK leaves the gate
17 h 41 apart on the timetable, overnight
DL 2398 leaves 17 h 41 after F9 2539 arrives on the timetable: more than half a day, so not a connection we count.