American Express Membership Rewards - UK Centurion benefits for Supplementary Ti card holder

Can anyone confirm which of the benefits of the UK program that the Supplementary cardholder is entitled to?

My brother activated his card yesterday, and the activation team told him that he was not entitled to the benefits. I thought that the 2nd card holder who has the other Ti card, is entitled to a lot, if not most of the primary benefits?

Thanks

It should all be clear in the T&Cs on the centurion website under benefits (I haven't checked myself). He would obv get access to cent travel and concierge etc. which includes FHR benefits and the like. Regarding the loyalty cards I also recall that it is a bit random as to which apply to both cards. Let us know what you find out (sorry to not be more helpful!).

My wife also gets Priority Pass, and of course access to things like the Eurostar lounge where you need to show your Centurion Card. We've never tried to enroll her for any of the elite tier benefits like Hilton, so I wonder if those are extended? She has also had no problem going to Centurion events without me, and probably uses our Relationship Manager more than I do!

I checked recently as I was looking for additional "insurance" if my MP Diamond turned out to only last for a year.

Mrs Oystercatcher currently gets Priority Pass and Virgin Silver, Cent confirmed that no other programmes are available to her.