I am saying that these are descriptions of the unconditioned - not descriptions of jhana. This seems the source of confusion. I am not here to convince you I am right but I will try to describe my reasoning. It is not confused. It could be wrong, but it is not confused.
You mentioned SN 16.9 and SN 54.13 - both of these describe the path, not the result or goal of the path (the deathless or whatever we want to call it). The path is fabricated:
MN 44:
“Now, again, lady, what is the noble eightfold path?”
“This is the noble eightfold path, friend Visākha: right view, right resolve, right speech, right action, right livelihood, right effort, right mindfulness, right concentration.”
“Is the noble eightfold path fabricated or unfabricated?”
“The noble eightfold path is fabricated.”
Further down in MN 44 we find:
“When a monk has emerged from the cessation of perception & feeling, lady, how many contacts make contact?”
“When a monk has emerged from the cessation of perception & feeling, friend Visākha, three contacts make contact: contact with emptiness, contact with the signless, & contact with the undirected.”
That is the unconditioned. What is that experience like? Thanisarro Bhikkhu describes it as an awareness outside of time and space.
From page 31 of Arahattamagga:
The citta lets go of the body, feeling, memory, thought and consciousness and enters a pure stillness of its very own, with absolutely no connection to the khandhas. In that moment, the five khandhas do not function in any way at all in relation to the citta…
No matter how deep or continuous, samãdhi is not an end in
itself. Samãdhi does not bring about an end to all suffering. But samãdhi does constitute an ideal platform from which to launch an all out assault on the kilesas that cause all suffering.
Note that the mind inclines to the deathless upon coming out of concentration - not during it. This is what I meant when I said ‘any level of jhana may be sufficient for stream entry to occur’.
As an analogy: If you walk down a hillside that gets ever steeper at some point you will slip and fall. The ever steeper hillside here stands for deepening of jhana. You don’t know exactly when you will fall - this depends on many factors. But at some point it will happen. As long as you are upright and moving toward the steeper slope - this refers to being in a conditioned or fabricated state - specifically the fabrication of jhana. The khandas are like the ground beneath your feet. When you slip and fall, this is the mind inclining toward the deathless and down you go and eventually off the cliff. Off the cliff: That is the unconditioned. Jhana sets you up for this - makes it more likely to occur - but it isn’t it.
Yes, that is the one I mean. Right Concentration is the practice regardless of where we are at. At stream entry we have basically reached the far shore - maybe something like standing in the surf and still needing to wade ashore? But the song remains the same.
I shall.