Where/how do Snp 5.7 & 15 prove kāya in meditation context is rūpa-kāya by default?

I read the following in [this answer](https://buddhism.stackexchange.com/a/49852/254) : > Snp 5 is a great example in usage that proves kāya in meditation > context is rūpa-kāya by default. > > https://notesonthedhamma.blogspot.com/2021/10/kn-snp-5-buddha-knew-about-ambiguities.html [Snp 5.7](https://suttacentral.net/snp5.7/en/sujato?lang=en&layout=linebyline&reference=none¬es=none&highlight=false&script=latin) says, per Sujato translation: > “As a flame tossed by a gust of wind,” > > “Accī yathā vātavegena khittā, > > replied the Buddha, > > (upasīvāti bhagavā) > > “comes to an end beyond reckoning; > > Atthaṁ paleti na upeti saṅkhaṁ; > > so too, a sage freed from mental **phenomena** > > Evaṁ munī nāma**kāyā** vimutto, > > comes to an end beyond reckoning.” > > Atthaṁ paleti na upeti saṅkhaṁ”. > > I ask the Sakyan about knowledge for them; > > Ñāṇaṁ sakkānupucchāmi, > > how should one like that be guided?” > > kathaṁ neyyo tathāvidho”. [Snp 5.15](https://suttacentral.net/snp5.15/en/sujato?lang=en&layout=linebyline&reference=none¬es=none&highlight=false&script=latin) says, per Sujato translation: > said Venerable Posāla [to the Buddha], > >(iccāyasmā posālo) > >Consider one who perceives the disappearance of **form**, > > Vibhūta**rūpa**saññissa, > > who has entirely given up **the body**, > > sabba**kāya**ppahāyino; > > and who **sees nothing** at all > > Ajjhattañca bahiddhā ca, > > internally and externally. > > **natthi** kiñcīti **passato**; > >......... > >“Viññāṇaṭṭhitiyo sabbā, > >said the Buddha, > >(posālāti bhagavā) > > “all the planes of consciousness. > > Abhijānaṁ tathāgato; > > And he knows this one who remains, > > Tiṭṭhantamenaṁ jānāti, > > committed to that as their final goal. > > Vimuttaṁ tapparāyaṇaṁ. > > Understanding that desire for rebirth [**coming to be**] > > **Ākiñcaññasambhavaṁ** ñatvā, > > **in the dimension of nothingness** is a fetter, > > Nandī saṁyojanaṁ iti; Where/how do Snp 5.7 & 15 prove kāya in meditation context is rūpa-kāya by default?