B6 833 then WN 137 at San Francisco
Boston → San Francisco → Denver
Timetable, San Francisco time
20:55B6 833 from Boston at the gatealso EY 8011
14:15WN 137 to Denver leaves the gate
17 h 20 apart on the timetable, overnight
WN 137 leaves 17 h 20 after B6 833 arrives on the timetable: more than half a day, so not a connection we count.