AA 9908 then UA 1491 at O'Hare
Milwaukee → Chicago → Charleston (South Carolina)
Timetable, Chicago time
13:50AA 9908 from Milwaukee at the gate
10:40UA 1491 to Charleston (South Carolina) leaves the gate
20 h 50 apart on the timetable, overnight
UA 1491 leaves 20 h 50 after AA 9908 arrives on the timetable: more than half a day, so not a connection we count.