AA 9908 then UA 1634 at O'Hare
Milwaukee → Chicago → Savannah
Timetable, Chicago time
13:50AA 9908 from Milwaukee at the gate
12:25UA 1634 to Savannah leaves the gate
22 h 35 apart on the timetable, overnight
UA 1634 leaves 22 h 35 after AA 9908 arrives on the timetable: more than half a day, so not a connection we count.