UA 5919 then AA 529 at O'Hare
Milwaukee → Chicago → Knoxville
Timetable, Chicago time
11:59UA 5919 from Milwaukee at the gate
10:36AA 529 to Knoxville leaves the gate
22 h 37 apart on the timetable, overnight
AA 529 leaves 22 h 37 after UA 5919 arrives on the timetable: more than half a day, so not a connection we count.