[KixdricyArrip]

are there comparisons that can be made between the two suttas?

Continuing with the topic, we move to the second satipatthana.

In the SS, the second satipatthana is concerned with all feelings, which is simply basic awareness practise.

And how does a monk remain focused on feelings in & of themselves? There is the case where a monk, when feeling a painful feeling, discerns that he is feeling a painful feeling. When feeling a pleasant feeling, he discerns that he is feeling a pleasant feeling. When feeling a neither-painful-nor-pleasant feeling, he discerns that he is feeling a neither-painful-nor-pleasant feeling. In the AS, the second satipatthana is only concerned with pleasant feelings, which on the higher level of attainment concentration are factors of jhana. For the stream enterer, they similarly arise but only on the level of neighbourhood concentration.

"[5] He trains himself, 'I will breathe in experiencing rapture.' He trains himself, 'I will breathe out experiencing rapture.' [6] He trains himself, 'I will breathe in experiencing happiness.' He trains himself, 'I will breathe out experiencing happiness.' [7] He trains himself, 'I will breathe in experiencing the mind fabricator.' [4] He trains himself, 'I will breathe out experiencing the mind fabricator.' [8] He trains himself, 'I will breathe in calming mind fabricator.' He trains himself, 'I will breathe out calming mind fabricator.' Again, this shows practise described in the AS is more advanced than in the SS.