DL 2420 then DL 5595 at JFK
Atlanta → New York → Washington
Timetable, New York time
10:29DL 2420 from Atlanta at the gate
10:25DL 5595 to Washington leaves the gate
23 h 56 apart on the timetable, overnight
DL 5595 leaves 23 h 56 after DL 2420 arrives on the timetable: more than half a day, so not a connection we count.