UA 3501 then UA 374 at O'Hare
Kansas City → Chicago → Los Angeles
Timetable, Chicago time
17:05UA 3501 from Kansas City at the gate
14:00UA 374 to Los Angeles leaves the gate
20 h 55 apart on the timetable, overnight
UA 374 leaves 20 h 55 after UA 3501 arrives on the timetable: more than half a day, so not a connection we count.