B6 833 then KE 6534 at San Francisco
Boston → San Francisco → Calgary
Timetable, San Francisco time
20:55B6 833 from Boston at the gatealso EY 8011
16:40KE 6534 to Calgary leaves the gate
19 h 45 apart on the timetable, overnight
KE 6534 leaves 19 h 45 after B6 833 arrives on the timetable: more than half a day, so not a connection we count.