UA 5471 then AA 529 at O'Hare
Louisville → Chicago → Knoxville
Timetable, Chicago time
14:55UA 5471 from Louisville at the gate
10:36AA 529 to Knoxville leaves the gate
19 h 41 apart on the timetable, overnight
AA 529 leaves 19 h 41 after UA 5471 arrives on the timetable: more than half a day, so not a connection we count.