AA 2843 then UA 6016 at O'Hare
Charlotte → Chicago → Green Bay
Timetable, Chicago time
09:10AA 2843 from Charlotte at the gate
21:25UA 6016 to Green Bay leaves the gate
12 h 15 apart on the timetable
UA 6016 leaves 12 h 15 after AA 2843 arrives on the timetable: more than half a day, so not a connection we count.