F9 4702 then DL 2398 at Atlanta
Austin → Atlanta → New York JFK
Timetable, Atlanta time
15:49F9 4702 from Austin at the gate
15:16DL 2398 to New York JFK leaves the gate
23 h 27 apart on the timetable, overnight
DL 2398 leaves 23 h 27 after F9 4702 arrives on the timetable: more than half a day, so not a connection we count.