F9 2972 then DL 2398 at Atlanta
New Orleans → Atlanta → New York JFK
Timetable, Atlanta time
21:20F9 2972 from New Orleans at the gate
15:16DL 2398 to New York JFK leaves the gate
17 h 56 apart on the timetable, overnight
DL 2398 leaves 17 h 56 after F9 2972 arrives on the timetable: more than half a day, so not a connection we count.