AA 2898 then UA 3671 at Charlotte
Jacksonville → Charlotte → Chicago O'Hare
Timetable, Charlotte time
16:11AA 2898 from Jacksonville at the gate
15:30UA 3671 to Chicago O'Hare leaves the gate
23 h 19 apart on the timetable, overnight
UA 3671 leaves 23 h 19 after AA 2898 arrives on the timetable: more than half a day, so not a connection we count.