UA 4735 then AA 529 at O'Hare
Charleston (South Carolina) → Chicago → Knoxville
Timetable, Chicago time
14:11UA 4735 from Charleston (South Carolina) at the gate
10:36AA 529 to Knoxville leaves the gate
20 h 25 apart on the timetable, overnight
AA 529 leaves 20 h 25 after UA 4735 arrives on the timetable: more than half a day, so not a connection we count.