OA and Walmart — how risky is it?

Hey everyone! If there are any OA sellers here, I have a question about Walmart. Buying directly from Walmart is usually fine, but what if I buy from a brand’s official account on Walmart? Not a third-party seller (I know that’s not good and counterfeit-risky, and Amazon doesn’t accept it at all), but the brand itself. Is that still risky for Amazon?