BR 646 then UA 2866 at O'Hare
Anchorage → Chicago → San Francisco
Timetable, Chicago time
17:10BR 646 from Anchorage at the gate
16:35UA 2866 to San Francisco leaves the gate
23 h 25 apart on the timetable, overnight
UA 2866 leaves 23 h 25 after BR 646 arrives on the timetable: more than half a day, so not a connection we count.