BR 646 then UA 8138 at O'Hare
Anchorage → Chicago → San Diego
Timetable, Chicago time
17:10BR 646 from Anchorage at the gate
16:00UA 8138 to San Diego leaves the gate
22 h 50 apart on the timetable, overnight
UA 8138 leaves 22 h 50 after BR 646 arrives on the timetable: more than half a day, so not a connection we count.