…Bonus points, however, have still been awarded when using (for example) a card that earns a bonus for airline ticket purchases. To learn more about this scroll back.
Thanks. The thing is, in an Amex portal airfare purchase, the Biz Plat is supposed to earn 4x bonus points just like the personal Plat. I finally found upstream in comments 639, 643, 644 that the Biz Plat will not earn the bonus points which differentiates it from the personal Plat and the PRG.