AA 4587 then DL 5483 at JFK
Pittsburgh → New York → Jacksonville
Timetable, New York time
07:49AA 4587 from Pittsburgh at the gate
07:15DL 5483 to Jacksonville leaves the gate
23 h 26 apart on the timetable, overnight
DL 5483 leaves 23 h 26 after AA 4587 arrives on the timetable: more than half a day, so not a connection we count.