UA 3902 then AA 2345 at O'Hare
Rio De Janeiro → Chicago → Washington National
Timetable, Chicago time
17:01UA 3902 from Rio De Janeiro at the gate
07:54AA 2345 to Washington National leaves the gate
14 h 53 apart on the timetable, overnight
AA 2345 leaves 14 h 53 after UA 3902 arrives on the timetable: more than half a day, so not a connection we count.