AA 9866 then UA 1660 at O'Hare
Bloomington-Normal → Chicago → Seattle (SEA)
Timetable, Chicago time
13:11AA 9866 from Bloomington-Normal at the gate
12:45UA 1660 to Seattle (SEA) leaves the gate
23 h 34 apart on the timetable, overnight
UA 1660 leaves 23 h 34 after AA 9866 arrives on the timetable: more than half a day, so not a connection we count.