UA 3902 then AA 5002 at O'Hare
Rio De Janeiro → Chicago → Cedar Rapids
Timetable, Chicago time
17:01UA 3902 from Rio De Janeiro at the gate
11:59AA 5002 to Cedar Rapids leaves the gate
18 h 58 apart on the timetable, overnight
AA 5002 leaves 18 h 58 after UA 3902 arrives on the timetable: more than half a day, so not a connection we count.