UA 3501 then UA 795 at O'Hare
Kansas City → Chicago → Vancouver
Timetable, Chicago time
17:05UA 3501 from Kansas City at the gate
08:49UA 795 to Vancouver leaves the gate
15 h 44 apart on the timetable, overnight
UA 795 leaves 15 h 44 after UA 3501 arrives on the timetable: more than half a day, so not a connection we count.