UA 3501 then AA 482 at O'Hare
Kansas City → Chicago → Boston
Timetable, Chicago time
17:05UA 3501 from Kansas City at the gate
12:06AA 482 to Boston leaves the gate
19 h 01 apart on the timetable, overnight
AA 482 leaves 19 h 01 after UA 3501 arrives on the timetable: more than half a day, so not a connection we count.