UA 3532 then AA 1792 at O'Hare
Knoxville → Chicago → Hartford
Timetable, Chicago time
18:43UA 3532 from Knoxville at the gate
14:30AA 1792 to Hartford leaves the gate
19 h 47 apart on the timetable, overnight
AA 1792 leaves 19 h 47 after UA 3532 arrives on the timetable: more than half a day, so not a connection we count.