Originally Posted by
CosmicGirl
This is tangential to your question but may come in handy if you run into any issues in BRU. You can try using the most significant carrier rule (see
IATA resolution 302), which would either put it under KL's policy (marketing carrier), or if they waive it off to the operating carrier then you'll get the 1PC on that segment anyway.
AIUI, the most significant carrier rule applies to contractual baggage allowance, not the additional baggage allowance granted to frequent flyers and would therefore not be relevant here since the contractual allowance is nil on a light fare.
[edit]: the IATA document that you reference explicitly confirms this at the bottom of p. 8 [/edit]