UA 3501 then UA 2091 at O'Hare
Kansas City → Chicago → Raleigh-Durham
Timetable, Chicago time
17:05UA 3501 from Kansas City at the gate
14:30UA 2091 to Raleigh-Durham leaves the gate
21 h 25 apart on the timetable, overnight
UA 2091 leaves 21 h 25 after UA 3501 arrives on the timetable: more than half a day, so not a connection we count.