Ok, so as we all know, BBS is 10 years before Kingdom Hearts. We also know Kairi arrived at the islands around 10 years before Kingdom Hearts also. Since Xehanort was the one to send her away, I'm thinking that it's most likely not possible for either DS+MX= Xehanort or Terra+MX=Xehanort. But, I don't know the exact timeline for BBS or the exact time Kairi arrived on Destiny Island. I don't know if this has been thought of before, and I'm sorry if I'm repeating an old idea. Please, post your opinions.