How good is Rener Gracie at bjj or fighting

If you’re a black belt who has ever had the chance to roll with him, or especially spar with him, I’d be curious to hear.

With him being Brian ortega’s coach I’d assume he’d be extremely elite even amongst black belts, but I’ve also seen great coaches that aren’t that great themselves. I’m positive he’s a great black belt just by virtue of training so many people and having not heard a single person fraud check him, but I’m kinda just curious where he’d fit in the pecking order for legit black belts