UA 3902 then AA 4583 at O'Hare
Rio De Janeiro → Chicago → Raleigh-Durham
Timetable, Chicago time
17:01UA 3902 from Rio De Janeiro at the gate
09:56AA 4583 to Raleigh-Durham leaves the gate
16 h 55 apart on the timetable, overnight
AA 4583 leaves 16 h 55 after UA 3902 arrives on the timetable: more than half a day, so not a connection we count.