VA 8311 then CX 7996 at San Francisco
Boston → San Francisco → Seattle
Timetable, San Francisco time
10:59VA 8311 from Boston at the gate
10:39CX 7996 to Seattle leaves the gate
23 h 40 apart on the timetable, overnight
CX 7996 leaves 23 h 40 after VA 8311 arrives on the timetable: more than half a day, so not a connection we count.