AA 9908 then UA 1793 at O'Hare
Milwaukee → Chicago → Indianapolis
Timetable, Chicago time
13:50AA 9908 from Milwaukee at the gate
10:36UA 1793 to Indianapolis leaves the gate
20 h 46 apart on the timetable, overnight
UA 1793 leaves 20 h 46 after AA 9908 arrives on the timetable: more than half a day, so not a connection we count.