AA 4448 then UA 6016 at O'Hare
Memphis → Chicago → Green Bay
Timetable, Chicago time
08:47AA 4448 from Memphis at the gate
21:25UA 6016 to Green Bay leaves the gate
12 h 38 apart on the timetable
UA 6016 leaves 12 h 38 after AA 4448 arrives on the timetable: more than half a day, so not a connection we count.