Thank you, Tealer, for the detailed posting.
I think it is a good idea to first see the difference between cetovimutti and pannavimutti Arahants.
– I had started writing a post on the Tapussa Sutta that explains this well. So, I was able to finish it today, and I just published it:
“Tapussa Sutta (AN 9.41)– Akuppā Cētōvimutti”
We can discuss more if you have questions. Please refer to the bullet numbers in the post, if you ask specific questions on it.