BR 646 then AA 1948 at O'Hare
Anchorage → Chicago → San Francisco
Timetable, Chicago time
10:40BR 646 from Anchorage at the gate
10:30AA 1948 to San Francisco leaves the gate
23 h 50 apart on the timetable, overnight
AA 1948 leaves 23 h 50 after BR 646 arrives on the timetable: more than half a day, so not a connection we count.