AA 642 then UA 5378 at O'Hare
Dallas-Fort Worth → Chicago → Green Bay
Timetable, Chicago time
13:10AA 642 from Dallas-Fort Worth at the gate
11:29UA 5378 to Green Bay leaves the gate
22 h 19 apart on the timetable, overnight
UA 5378 leaves 22 h 19 after AA 642 arrives on the timetable: more than half a day, so not a connection we count.