B6 134 then DL 1677 at Boston
San Francisco → Boston → Austin
Timetable, Boston time
06:44B6 134 from San Francisco at the gate
18:59DL 1677 to Austin leaves the gate
12 h 15 apart on the timetable
DL 1677 leaves 12 h 15 after B6 134 arrives on the timetable: more than half a day, so not a connection we count.