AA 2475 then UA 6105 at O'Hare
Los Angeles → Chicago → YIP
Timetable, Chicago time
05:02AA 2475 from Los Angeles at the gate
17:30UA 6105 to YIP leaves the gate
12 h 28 apart on the timetable
UA 6105 leaves 12 h 28 after AA 2475 arrives on the timetable: more than half a day, so not a connection we count.