DL 539 then DL 2398 at Atlanta
Portland (Oregon) → Atlanta → New York JFK
Timetable, Atlanta time
19:27DL 539 from Portland (Oregon) at the gate
15:16DL 2398 to New York JFK leaves the gate
19 h 49 apart on the timetable, overnight
DL 2398 leaves 19 h 49 after DL 539 arrives on the timetable: more than half a day, so not a connection we count.