UA 4651 then AA 529 at O'Hare
Moline → Chicago → Knoxville
Timetable, Chicago time
11:58UA 4651 from Moline at the gate
10:36AA 529 to Knoxville leaves the gate
22 h 38 apart on the timetable, overnight
AA 529 leaves 22 h 38 after UA 4651 arrives on the timetable: more than half a day, so not a connection we count.