I am just starting planning a DONEX itin for my family of 4. We would begin in OSL. 2 of us need to fly approximately 11,000 miles on AY, BA, AA, or IB to retain AY Plat status. Is there a permitted itin from OSL-SFO that would only include EU and NA, hit the 11K mileage goal, yet leave 1 onward segment available from SFO-LAX so we could connect to LAX-HND and leave 1 EU segment available for LHR-OSL to close out the RTW?

As an example, is HEL-LPA-LHR permitted? That combined with LHR-MIA-SFO gets us very close.