Certain Affinity helping 343i

What’s the deal with Certain Affinity? Where they acquired by someone else? I’m surprised MS hasn’t offered to buy them unless someone else has dibs on them. I know Leyou has them developing a game but aside that aren’t they independent?

Leyou owns a 20% stake with first rights to buy which I think Tencent will do, unless buying Leyou released Certain Affinity. I’m not sure.