BR 608 then UA 1577 at O'Hare
Anchorage → Chicago → San Francisco
Timetable, Chicago time
20:40BR 608 from Anchorage at the gate
14:30UA 1577 to San Francisco leaves the gate
17 h 50 apart on the timetable, overnight
UA 1577 leaves 17 h 50 after BR 608 arrives on the timetable: more than half a day, so not a connection we count.