WN 9003 then B6 1034 at San Francisco
Phoenix → San Francisco → Boston
Timetable, San Francisco time
11:18WN 9003 from Phoenix at the gate
06:00B6 1034 to Boston leaves the gatealso EY 8006, EY 8261
18 h 42 apart on the timetable, overnight
B6 1034 leaves 18 h 42 after WN 9003 arrives on the timetable: more than half a day, so not a connection we count.