AA 4121 then CI 5235 at O'Hare
Green Bay → Chicago → Seattle (SEA)
Timetable, Chicago time
07:27AA 4121 from Green Bay at the gate
00:55CI 5235 to Seattle (SEA) leaves the gate
17 h 28 apart on the timetable, overnight
CI 5235 leaves 17 h 28 after AA 4121 arrives on the timetable: more than half a day, so not a connection we count.