B6 833 then DL 1077 at San Francisco
Boston → San Francisco → Austin
Timetable, San Francisco time
20:55B6 833 from Boston at the gatealso EY 8011
18:28DL 1077 to Austin leaves the gatealso KE 3278
21 h 33 apart on the timetable, overnight
DL 1077 leaves 21 h 33 after B6 833 arrives on the timetable: more than half a day, so not a connection we count.