UA 3902 then AA 4960 at O'Hare
Rio De Janeiro → Chicago → South Bend
Timetable, Chicago time
17:01UA 3902 from Rio De Janeiro at the gate
11:50AA 4960 to South Bend leaves the gate
18 h 49 apart on the timetable, overnight
AA 4960 leaves 18 h 49 after UA 3902 arrives on the timetable: more than half a day, so not a connection we count.