AA 4370 then DL 5595 at JFK
Cincinnati → New York → Washington
Timetable, New York time
11:00AA 4370 from Cincinnati at the gate
10:25DL 5595 to Washington leaves the gate
23 h 25 apart on the timetable, overnight
DL 5595 leaves 23 h 25 after AA 4370 arrives on the timetable: more than half a day, so not a connection we count.