Explained numerous times In this very thread Bajadrone....the guy is literally a ghost 👻👻👻 ahaha...hes the fuckin boogeyman!! He learned under El Azul (probably the actually Boss of Bosses if you can put all the pieces, conspiracy theories, rumours, and then prob a few truths too but of course it's fucking Mexico that's the best your gonna get)...anyway learned under AZul and apparently learned very very well.
Actually, the comment about Mayo and Rafa cleaning house was said in a comment further down. It was mentioned separately from the story of the police chief's narco sendoff. It was a good article, but long on speculation, so I never bothered to translate and post it.
Those that say, don't know. Those that know, don't say.