UA 3911 then AA 3344 at O'Hare
Portland (Oregon) → Chicago → Appleton
Timetable, Chicago time
17:09UA 3911 from Portland (Oregon) at the gate
09:40AA 3344 to Appleton leaves the gate
16 h 31 apart on the timetable, overnight
AA 3344 leaves 16 h 31 after UA 3911 arrives on the timetable: more than half a day, so not a connection we count.