Excellent stuff ^ Should we maybe clarify that Silver lounge access is quite restricted (i.e. not like BA Silver/OW Sapphire for those looking at comps), e.g. "Access to diamond club lounges, business lounges and overseas executive lounges when travelling on business, economy and discounted economy fares on BD operated flights only (BD Silver equates to *S which does not provide lounge access on other carriers as a benefit, for that you need *G)."

Are there exceptions to 'BD operated'? I think I read on here BD-coded ex-LHR works for access to LH/SK lounges?

BTW Not sure how you'd get a two-class upgrade on the two-class service from Almaty