UA 4460 then AA 529 at O'Hare
Knoxville → Chicago → Knoxville
Timetable, Chicago time
15:00UA 4460 from Knoxville at the gate
10:36AA 529 to Knoxville leaves the gate
19 h 36 apart on the timetable, overnight
AA 529 leaves 19 h 36 after UA 4460 arrives on the timetable: more than half a day, so not a connection we count.