I don’t think there are appropriate words to describe it properly. Once defined, “totality of existence”, one can say, “Yeah, well, then what happens OUTSIDE of the totality of existence”?
So, I try to stay quiet for the most part about the beyond stuff that words can’t properly express, or if I define, I try to define in a negative “what it’s not” fashion to give it all the room it requires beyond the limitations of my conceptual boundaries.
Well, it’s like the question, “Who made God?” It’s of course a ridiculous question, once somebody understands something about God. But it gets asked anyway.