I started a discussion about this topic here: Is there a contradiction in the Kevatta Sutta? and came to the personal conclusion that this verse Thanissaro, Nanananda & others seem to focus on is not about Nirvana & is not even a Buddhist teaching and is just a gradual & idiosyncratic teaching given by the Buddha to & for Brahmans since the context in the relevant suttas (DN 11 & MN 49) are Brahmans & Brahma Gods.
SN 22.53 does not include the term ‘anidassanam’ but does include the term ‘does not land’ and could assist in shedding some light on the original question.