UA 3902 then AA 3498 at O'Hare
Rio De Janeiro → Chicago → Tulsa
Timetable, Chicago time
17:01UA 3902 from Rio De Janeiro at the gate
08:10AA 3498 to Tulsa leaves the gate
15 h 09 apart on the timetable, overnight
AA 3498 leaves 15 h 09 after UA 3902 arrives on the timetable: more than half a day, so not a connection we count.