UA 4455 then AA 529 at O'Hare
Madison → Chicago → Knoxville
Timetable, Chicago time
13:49UA 4455 from Madison at the gate
10:36AA 529 to Knoxville leaves the gate
20 h 47 apart on the timetable, overnight
AA 529 leaves 20 h 47 after UA 4455 arrives on the timetable: more than half a day, so not a connection we count.