AA 4712 then DL 5595 at JFK
Nashville → New York → Washington
Timetable, New York time
12:19AA 4712 from Nashville at the gate
10:25DL 5595 to Washington leaves the gate
22 h 06 apart on the timetable, overnight
DL 5595 leaves 22 h 06 after AA 4712 arrives on the timetable: more than half a day, so not a connection we count.