Yes, the second SA will get the commission. But if this question is a follow up to your
other post today then you should know that the return on your account will negatively impact your profile far more than the spending of the store credit with your SA will help it, especially now that the SM has been brought into the scheme and knows what you are trying to do. They also have restrictions on what the store credit can be used for, typically cannot be applied to leather goods etc. All in all, especially if you like the items you initially bought, the 1-3% commission your new SA would theoretically get isn’t worth the hassle and bad reputation, imo.