AA 548 then AA 1588 at Charlotte
Jacksonville → Charlotte → Grand Rapids
Timetable, Charlotte time
10:03AA 548 from Jacksonville at the gate
22:40AA 1588 to Grand Rapids leaves the gate
12 h 37 apart on the timetable
AA 1588 leaves 12 h 37 after AA 548 arrives on the timetable: more than half a day, so not a connection we count.