AA 9866 then UA 1879 at O'Hare
Bloomington-Normal → Chicago → San Jose del Cabo
Timetable, Chicago time
13:11AA 9866 from Bloomington-Normal at the gate
09:03UA 1879 to San Jose del Cabo leaves the gate
19 h 52 apart on the timetable, overnight
UA 1879 leaves 19 h 52 after AA 9866 arrives on the timetable: more than half a day, so not a connection we count.