UA 3532 then AA 4927 at O'Hare
Knoxville → Chicago → Burlington (BTV)
Timetable, Chicago time
18:43UA 3532 from Knoxville at the gate
14:30AA 4927 to Burlington (BTV) leaves the gate
19 h 47 apart on the timetable, overnight
AA 4927 leaves 19 h 47 after UA 3532 arrives on the timetable: more than half a day, so not a connection we count.