UA 8173 then AA 529 at O'Hare
Cleveland → Chicago → Knoxville
Timetable, Chicago time
10:54UA 8173 from Cleveland at the gate
10:36AA 529 to Knoxville leaves the gate
23 h 42 apart on the timetable, overnight
AA 529 leaves 23 h 42 after UA 8173 arrives on the timetable: more than half a day, so not a connection we count.