B6 478 then AA 1186 at JFK
Jacksonville → New York → Miami
Timetable, New York time
18:00B6 478 from Jacksonville at the gate
15:59AA 1186 to Miami leaves the gate
21 h 59 apart on the timetable, overnight
AA 1186 leaves 21 h 59 after B6 478 arrives on the timetable: more than half a day, so not a connection we count.