Amex Business bonus while holding personal card

From the article that is currently pinned at the top of the main page:

“You qualify for the bonus as long as you have not had an American Express card earning Membership Rewards points, personal or Business, in the last thirteen months.

Note that the rule on the Business Cards is 13 months and NOT the 24 months that applies to the personal Cards.

For clarity …. the ‘no Membership Rewards cards’ rule applies across personal and Business Cards. If you have had a personal Gold, Platinum etc card in the past 13 months then you will NOT receive the bonus on Business Gold or Business Platinum.”