vinasp: "Nowhere in the Nikaya's is the asekha defined as one who 'has no more work to do.'"
santa100: "Provided with your own confirmation, that an arahant is an ASekha, ever heard of that common stock phrase for arahants being used thru out the Nikayas: 'Birth is ended, the holy life fulfilled, the task done. There is nothing further for this world.'?"
What I said is true, the asekha is not explicitly defined in that way. It is you that
regards the asekha as being the same as the arahant who has attained the arahant fruit.
Based on that assumption you naturally think that the stock phrase 'Birth has ended ...'
refers to the asekha, when it is actually said of an arahant. One of the arahants is an
asekha, but the other one is not.
If two of the noble persons are called arahants, then the phrase 'Birth is ended ...',
needs to be understood as a reference to the arahant who has attained the arahant fruit.
In other places the term 'arahant' may refer to the other noble person of the pair. Such
as the line from MN 117 already quoted.
vinasp: "The arahant (asekha) who is on the path to the fruit of arahantship clearly still has work to do."
santa100:"There're 2 problems with your statement:
1. Your assumption that one on the path to arahantship is already an arahant (or arahant "level 1" in your language).
2. The ASekha still has work to do."
On #1: What I say is that, 'the one on the path to attaining the fruit of arahantship', is
called an arahant. So, yes, he is an arahant, but not the one who has attained the fruit.
What about your assumption that only one of the pair is called an arahant?
On #2: For me, the asekha is noble person number 7, he clearly still has work to do. For
you, it seems, the asekha is noble person number 8, who does not have work to do.
It seems that the terms: 'arahant', 'non-returner', 'once-returner', and 'stream enterer',
can all refer to either or both persons of the pair. So each term has two meanings.