AA 5457 then AA 811 at Charlotte
Manchester → Charlotte → New York JFK
Timetable, Charlotte time
18:18AA 5457 from Manchester at the gate
18:02AA 811 to New York JFK leaves the gate
23 h 44 apart on the timetable, overnight
AA 811 leaves 23 h 44 after AA 5457 arrives on the timetable: more than half a day, so not a connection we count.