Originally Posted by
shorthauldad
Yes, I know

...but it's the fact that description of the allowance does differ between the sectors that I thought was worth noting. MMB is not just showing the standard "BA WTP" baggage allowance for the QF sector.
The IATA rules for MSC will apply in this case. Since BA is providing the travel between TC2 and TC3, the ticketed BA allowance of 2 pieces 23Kg will apply to the whole one way journey. That is the same rule for a WT+ to BNE or WT to PER ( just that the allowances are 2 vs 1 )
The issue that the OP has is that the OP is hoping to use a silver benefit that applies to BA flights only on the Qantas one and, as noted in your post, that extra BA allowance does not show in the ticketed allowances
Seems an expensive gamble to me