I watched the video and there's some interesting overlap, although we might not be saying exactly the same thing. He says the universe or the container of all spatiotemporal events couldn't be just another spatiotemporal event; otherwise, that wholeness would have to be contained by a greater wholeness. So that so-called whole of nature ends up as nothing.
Likewise, God as the absolute bedrock of reality would be Being rather than just another being, to use Heidegger's distinction. God, too, ends up, then, as nothing because Being is ineffable and inconceivable, just like absolute nothingness or the Kantian noumenon. This conception of nothing takes us in a cosmicist direction, as I explain in the articles below, which might interest you.
The wholeness of nature is a presumption of philosophical naturalism since otherwise, if there are irreconcilable disconnections between certain events, as Gabriel says, we're left with supernaturalism or with metaphysical dualism.
http://rantswithintheundeadgod.blogspot.com/2017/01/why-something-rather-than-nothing.html
http://rantswithintheundeadgod.blogspot.com/2019/02/is-there-something-rather-than-nothing.html
