UA 973 then AA 529 at O'Hare
Brussels → Chicago → Knoxville
Timetable, Chicago time
12:10UA 973 from Brussels at the gate
10:36AA 529 to Knoxville leaves the gate
22 h 26 apart on the timetable, overnight
AA 529 leaves 22 h 26 after UA 973 arrives on the timetable: more than half a day, so not a connection we count.