UA 3686 then AA 529 at O'Hare
Jacksonville → Chicago → Knoxville
Timetable, Chicago time
14:29UA 3686 from Jacksonville at the gate
10:36AA 529 to Knoxville leaves the gate
20 h 07 apart on the timetable, overnight
AA 529 leaves 20 h 07 after UA 3686 arrives on the timetable: more than half a day, so not a connection we count.