DL 2599 then DL 2398 at Atlanta
Madison → Atlanta → New York JFK
Timetable, Atlanta time
22:59DL 2599 from Madison at the gate
15:16DL 2398 to New York JFK leaves the gate
16 h 17 apart on the timetable, overnight
DL 2398 leaves 16 h 17 after DL 2599 arrives on the timetable: more than half a day, so not a connection we count.