MN 152 What if Ajahn Brahm and Buddhaghosa met the Buddha to discuss first jhāna?

Since first jhana is a subset of developed faculties, 

and a trainee (sekha) with developed faculties is at least a stream enterer, 

and most importantly, since we can see that developed faculties (and developed 'body' kaya see MN 36) have nothing to do with attaining a formless samadhi, 

we could infer a conversation between the Buddha, Ajahn Brahm, and Buddhghosa (editor in chief of Visuddhimagga) might go something like this.

(I modify MN 152 excerpt with a few name changes)

 

MN 152

• (links to sutta) MN 152 Indriya-bhāvanā
  • (brahman Parasiri teaching of indriya ridiculed )
    • 1st type: unexcelled development of faculties
    • 2nd type: trainee
    • 3rd type: noble one with developed faculties
    • conclusion

MN 152 Indriya-bhāvanā

MN 152 Indriya-bhāvanā-sutta	MN 152 Indriyabhāvanā Sutta: The Development of the Faculties
Evaṃ me sutaṃ— ekaṃ samayaṃ bhagavā gajaṅgalāyaṃ viharati suveḷuvane.	I have heard that on one occasion the Blessed One was staying among the Kajjangalas in the Bamboo Grove.
Atha kho uttaro māṇavo pārāsiviyantevāsī yena bhagavā tenupasaṅkami;	Then the young brahman Uttara, a student of Ajahn Brahm and Buddhaghosa went to the Blessed One and,
upasaṅkamitvā bhagavatā saddhiṃ sammodi.	on arrival, exchanged friendly greetings & courtesies.
Sammodanīyaṃ kathaṃ sāraṇīyaṃ vītisāretvā ekamantaṃ nisīdi.	After this exchange of courteous greetings he sat to one side.
Ekamantaṃ nisinnaṃ kho uttaraṃ māṇavaṃ pārāsiviyantevāsiṃ bhagavā etadavoca:	As he was sitting there, the Blessed One said to him:

(brahman Parasiri teaching of indriya ridiculed )

“deseti, uttara, pārāsiviyo brāhmaṇo sāvakānaṃ indriyabhāvanan”ti?	"Uttara, does Ajahn Brahm and Buddhaghosa teach their followers the development of the faculties?"
“Deseti, bho gotama, pārāsiviyo brāhmaṇo sāvakānaṃ indriyabhāvanan”ti.	Yes, master Gotama, they do.
“Yathā kathaṃ pana, uttara, deseti pārāsiviyo brāhmaṇo sāvakānaṃ indriyabhāvanan”ti?	And how do they teach their followers the development of the faculties?
“Idha, bho gotama, cakkhunā rūpaṃ na passati, sotena saddaṃ na suṇāti—	"There is the case where one does not see forms with the eye, or hear sounds with the ear [in a trance of non-perception].
evaṃ kho, bho gotama, deseti pārāsiviyo brāhmaṇo sāvakānaṃ indriyabhāvanan”ti.	That's how the Ajahn Brahm and Buddhaghosa teaches their followers the development of the faculties."
“Evaṃ sante kho, uttara, andho bhāvitindriyo bhavissati, badhiro bhāvitindriyo bhavissati;	"That being the case, Uttara, then a blind person will have developed faculties, and a deaf person will have developed faculties,
yathā pārāsiviyassa brāhmaṇassa vacanaṃ.	according to the words of the Ajahn Brahm and Buddhaghosa.
Andho hi, uttara, cakkhunā rūpaṃ na passati, badhiro sotena saddaṃ na suṇātī”ti.	For a blind person does not see forms with the eye, and a deaf person does not hear sounds with the ear."
Evaṃ vutte, uttaro māṇavo pārāsiviyantevāsī tuṇhībhūto maṅkubhūto pattakkhandho adhomukho pajjhāyanto appaṭibhāno nisīdi.	When this was said, the young brahman Uttara sat silent & abashed, his shoulders slumped, his head down, brooding, at a loss for words.
Atha kho bhagavā uttaraṃ māṇavaṃ pārāsiviyantevāsiṃ tuṇhībhūtaṃ maṅkubhūtaṃ pattakkhandhaṃ adhomukhaṃ pajjhāyantaṃ appaṭibhānaṃ viditvā āyasmantaṃ ānandaṃ āmantesi:	The Blessed One — noticing that Uttara was sitting silent & abashed, his shoulders slumped, his head down, brooding, at a loss for words — said to Ven.
“aññathā kho, ānanda, deseti pārāsiviyo brāhmaṇo sāvakānaṃ indriyabhāvanaṃ, aññathā ca panānanda, ariyassa vinaye anuttarā indriyabhāvanā hotī”ti.	Ananda, "Ananda, the development of the faculties that Ajahn Brahm and Buddhaghosa teaches their followers is one thing, but the unexcelled development of the faculties in the discipline of a noble one is something else entirely."
“Etassa, bhagavā, kālo;	"Now is the time, O Blessed One.
etassa, sugata, kālo yaṃ bhagavā ariyassa vinaye anuttaraṃ indriyabhāvanaṃ deseyya.	Now is the time, O One Well-Gone, for the Blessed One to teach the unexcelled development of the faculties in the discipline of the noble one.
Bhagavato sutvā bhikkhū dhāressantī”ti.	Having heard the Blessed One, the monks will remember it."
“Tenahānanda, suṇāhi, sādhukaṃ manasi karohi;	"In that case, Ananda, listen & pay close attention.
bhāsissāmī”ti.	I will speak."
“Evaṃ, bhante”ti kho āyasmā ānando bhagavato paccassosi.	"As you say, lord," Ven. Ananda responded to the Blessed One.
Bhagavā etadavoca:	The Blessed One said: