UA 3532 then AA 3188 at O'Hare
Knoxville → Chicago → Charlotte
Timetable, Chicago time
18:43UA 3532 from Knoxville at the gate
16:45AA 3188 to Charlotte leaves the gate
22 h 02 apart on the timetable, overnight
AA 3188 leaves 22 h 02 after UA 3532 arrives on the timetable: more than half a day, so not a connection we count.