F9 2144 then DL 2398 at Atlanta
Chicago Midway → Atlanta → New York JFK
Timetable, Atlanta time
21:53F9 2144 from Chicago Midway at the gate
15:16DL 2398 to New York JFK leaves the gate
17 h 23 apart on the timetable, overnight
DL 2398 leaves 17 h 23 after F9 2144 arrives on the timetable: more than half a day, so not a connection we count.