AA 3311 then AA 3931 at Detroit
Charlotte → Detroit → Miami
Timetable, Detroit time
19:35AA 3311 from Charlotte at the gate
18:56AA 3931 to Miami leaves the gate
23 h 21 apart on the timetable, overnight
AA 3931 leaves 23 h 21 after AA 3311 arrives on the timetable: more than half a day, so not a connection we count.