AZ 628 then AA 529 at O'Hare
Rome → Chicago → Knoxville
Timetable, Chicago time
13:10AZ 628 from Rome at the gatealso UA 971
10:36AA 529 to Knoxville leaves the gate
21 h 26 apart on the timetable, overnight
AA 529 leaves 21 h 26 after AZ 628 arrives on the timetable: more than half a day, so not a connection we count.