AA 3253 then AA 3867 at Charlotte
Indianapolis → Charlotte → Key West
Timetable, Charlotte time
12:53AA 3253 from Indianapolis at the gate
12:45AA 3867 to Key West leaves the gate
23 h 52 apart on the timetable, overnight
AA 3867 leaves 23 h 52 after AA 3253 arrives on the timetable: more than half a day, so not a connection we count.