UA 3501 then UA 4802 at O'Hare
Kansas City → Chicago → Milwaukee
Timetable, Chicago time
17:05UA 3501 from Kansas City at the gate
13:55UA 4802 to Milwaukee leaves the gate
20 h 50 apart on the timetable, overnight
UA 4802 leaves 20 h 50 after UA 3501 arrives on the timetable: more than half a day, so not a connection we count.