Platinum supplementary holder, insurance and requirement to pay on card account

[ringingup]

If a supplementary Platinum card holder pays for a trip with an AMEX Card whose account belongs to them, would they still be covered for the parts that require paying with an Amex on their card account?

I’m thinking of getting my partner upgraded to Platinum and cancel my own Platinum.

[DJ]

“
“Insured” means (i) Cardmembers and their Families, (ii) Supplementary Cardmembers and their Families and (iii) grandchildren of the Cardmember or a Supplementary Cardmember who are under the age of 25 and travelling with anyone insured under the Card Account.

“Account” or “Card Account” means Your consumer and small business cards issued by American Express
in the UK, excluding corporate cards and any American Express cards issued by bank partners.

“Card” means any Card or other Account access device issued to a Cardmember (or a Supplementary Cardmember) for the purpose of accessing the Account.

“Cardmember” means any individual who holds a valid Account.“

Based on the above definitions, I would say yes, should be covered. As long as the Amex card used belongs to the card member.