BR 646 then UA 3434 at O'Hare
Anchorage → Chicago → Knoxville
Timetable, Chicago time
17:10BR 646 from Anchorage at the gate
14:07UA 3434 to Knoxville leaves the gate
20 h 57 apart on the timetable, overnight
UA 3434 leaves 20 h 57 after BR 646 arrives on the timetable: more than half a day, so not a connection we count.