Xoulz, each Sao Paulo core inside the Magny Cours have 4 HT links, 3 of them are Cache Coherent. (the 4th one is to connect the cpu to the chipset)
Both dies are connected by one and a half HT link (x16+x8) and there is another one and a half HT link for each die to connect to one of the dies on the other Magny Cours (in a 2P system).