It is indifferent to my argument whether sense-perception has or has not thought as another ingredient.

If sense-perception does not involve thought, then sense-awareness and sense-perception are identical.

But the something perceived is perceived as an entity which is the terminus of the sense-awareness, something which for thought is beyond the fact of that sense-awareness.

Also the something perceived certainly does not contain other sense-awarenesses which are different from the sense-awareness which is an ingredient in that perception.

Accordingly nature as disclosed in sense-perception is self-contained as against sense-awareness, in addition to being self-contained as against thought.
I will also express this self-containedness of nature by saying that nature is closed to mind.
This closure of nature does not carry with it any metaphysical doctrine of the disjunction of nature and mind.