UA 3532 then AA 3635 at O'Hare
Knoxville → Chicago → La Crosse
Timetable, Chicago time
18:43UA 3532 from Knoxville at the gate
16:50AA 3635 to La Crosse leaves the gate
22 h 07 apart on the timetable, overnight
AA 3635 leaves 22 h 07 after UA 3532 arrives on the timetable: more than half a day, so not a connection we count.