B6 833 then AC 4470 at San Francisco
Boston → San Francisco → Ontario
Timetable, San Francisco time
20:55B6 833 from Boston at the gatealso EY 8011
14:00AC 4470 to Ontario leaves the gatealso UA 5592
17 h 05 apart on the timetable, overnight
AC 4470 leaves 17 h 05 after B6 833 arrives on the timetable: more than half a day, so not a connection we count.