UA 3532 then AA 4916 at O'Hare
Knoxville → Chicago → Evansville
Timetable, Chicago time
18:43UA 3532 from Knoxville at the gate
16:59AA 4916 to Evansville leaves the gate
22 h 16 apart on the timetable, overnight
AA 4916 leaves 22 h 16 after UA 3532 arrives on the timetable: more than half a day, so not a connection we count.