UA 2618 then AA 529 at O'Hare
Seattle (SEA) → Chicago → Knoxville
Timetable, Chicago time
13:10UA 2618 from Seattle (SEA) at the gate
10:36AA 529 to Knoxville leaves the gate
21 h 26 apart on the timetable, overnight
AA 529 leaves 21 h 26 after UA 2618 arrives on the timetable: more than half a day, so not a connection we count.