I've seen the entities plenty of times on DMT, a few times on GREAT shrooms, and once on acid.
I have tried to extract information that i was not aware of from them to no avail.
They were only able to say/tell me things I already knew or have heard verbatim from other sources before.
This leads me to believe that these entities are, in fact, a product of your own infinitely powerful mind.
No hyperspace, no other dimension, just imagination.
It's drugs people, you can learn things from them, but not more than you already know.
Trust