AA 3815 then AA 3448 at O'Hare
Hartford → Chicago → Green Bay
Timetable, Chicago time
20:15AA 3815 from Hartford at the gate
16:59AA 3448 to Green Bay leaves the gate
20 h 44 apart on the timetable, overnight
AA 3448 leaves 20 h 44 after AA 3815 arrives on the timetable: more than half a day, so not a connection we count.