UA 3902 then UA 441 at O'Hare
Rio De Janeiro → Chicago → Dallas-Fort Worth
Timetable, Chicago time
17:01UA 3902 from Rio De Janeiro at the gate
11:47UA 441 to Dallas-Fort Worth leaves the gate
18 h 46 apart on the timetable, overnight
UA 441 leaves 18 h 46 after UA 3902 arrives on the timetable: more than half a day, so not a connection we count.