UA 5381 then AA 529 at O'Hare
Detroit → Chicago → Knoxville
Timetable, Chicago time
14:48UA 5381 from Detroit at the gate
10:36AA 529 to Knoxville leaves the gate
19 h 48 apart on the timetable, overnight
AA 529 leaves 19 h 48 after UA 5381 arrives on the timetable: more than half a day, so not a connection we count.