UA 3501 then AA 3815 at O'Hare
Kansas City → Chicago → Hartford
Timetable, Chicago time
17:05UA 3501 from Kansas City at the gate
14:22AA 3815 to Hartford leaves the gate
21 h 17 apart on the timetable, overnight
AA 3815 leaves 21 h 17 after UA 3501 arrives on the timetable: more than half a day, so not a connection we count.