UA 3902 then AA 312 at O'Hare
Rio De Janeiro → Chicago → Dallas-Fort Worth
Timetable, Chicago time
17:01UA 3902 from Rio De Janeiro at the gate
09:59AA 312 to Dallas-Fort Worth leaves the gate
16 h 58 apart on the timetable, overnight
AA 312 leaves 16 h 58 after UA 3902 arrives on the timetable: more than half a day, so not a connection we count.