UA 3501 then AS 325 at O'Hare
Kansas City → Chicago → Portland (Oregon)
Timetable, Chicago time
17:05UA 3501 from Kansas City at the gate
14:07AS 325 to Portland (Oregon) leaves the gate
21 h 02 apart on the timetable, overnight
AS 325 leaves 21 h 02 after UA 3501 arrives on the timetable: more than half a day, so not a connection we count.