UA 1617 then AA 529 at O'Hare
Houston → Chicago → Knoxville
Timetable, Chicago time
11:17UA 1617 from Houston at the gate
10:36AA 529 to Knoxville leaves the gate
23 h 19 apart on the timetable, overnight
AA 529 leaves 23 h 19 after UA 1617 arrives on the timetable: more than half a day, so not a connection we count.