AA 1606 then AA 3087 at Charlotte
Chicago O'Hare → Charlotte → Indianapolis
Timetable, Charlotte time
08:06AA 1606 from Chicago O'Hare at the gate
20:15AA 3087 to Indianapolis leaves the gate
12 h 09 apart on the timetable
AA 3087 leaves 12 h 09 after AA 1606 arrives on the timetable: more than half a day, so not a connection we count.