UA 3532 then AA 1233 at O'Hare
Knoxville → Chicago → Orlando
Timetable, Chicago time
18:43UA 3532 from Knoxville at the gate
14:51AA 1233 to Orlando leaves the gate
20 h 08 apart on the timetable, overnight
AA 1233 leaves 20 h 08 after UA 3532 arrives on the timetable: more than half a day, so not a connection we count.