Just realized you can earn SQ PPS sectors on the following VS routes:

Miles - Business Class Sector Earn

UK to N.A
LHR-BOS 3265 - 2.5
LHR-LAX 5456 - 3.75
LHR-MIA 5425 - 3.75
LHR-SFO 5367 - 3.75
LHR-IAD 3677 - 2.5
MAN-MCO 4236 - 2.5

UK to M.E.
LHR-DXB 3421 - 2.5

Asia to Australia
SIN-SYD 3907 - 2.5

My question is if I fly from LHR to SFO on VS business class I'll entitle 3.75 sector on SQ KrisFlyer program? Does this 3.75 count towards part of the 25 sectors PPS renewal? I don''t know where to find out whether that portion of the VS flight will carry any SQ code share flight number...?

My planned itinerary from SIN=>LHR=>SFO=>HKG=>SIN

Another question is can I fly this route on the Star Alliance Round The World business class even though VS is not a Star Alliance member yet, someone told me you can leave 1 sector for open jaw, for example from Europe to the U.S. ...?