UA 3902 then AA 4996 at O'Hare
Rio De Janeiro → Chicago → Cedar Rapids
Timetable, Chicago time
17:01UA 3902 from Rio De Janeiro at the gate
08:56AA 4996 to Cedar Rapids leaves the gate
15 h 55 apart on the timetable, overnight
AA 4996 leaves 15 h 55 after UA 3902 arrives on the timetable: more than half a day, so not a connection we count.