AA 2585 then UA 3440 at Charlotte
Jacksonville → Charlotte → Newark
Timetable, Charlotte time
12:29AA 2585 from Jacksonville at the gate
12:21UA 3440 to Newark leaves the gate
23 h 52 apart on the timetable, overnight
UA 3440 leaves 23 h 52 after AA 2585 arrives on the timetable: more than half a day, so not a connection we count.