AA 383 then UA 5191 at O'Hare
Los Angeles → Chicago → Lancaster
Timetable, Chicago time
12:21AA 383 from Los Angeles at the gate
08:50UA 5191 to Lancaster leaves the gate
20 h 29 apart on the timetable, overnight
UA 5191 leaves 20 h 29 after AA 383 arrives on the timetable: more than half a day, so not a connection we count.