even tho you did not ask a question, i will address this.
Nibbana when defined as removal of ignorance and the abscence of delusion in an Arahant;
“This, bhikkhu, is a designation for the element of Nibbāna: the removal of lust, the removal of hatred, the removal of delusion. The destruction of the taints is spoken of in that way.” SN45.7
"What, bhikkhus, is the Nibbana-element with residue left? Here a bhikkhu is an arahant, one whose taints are destroyed, the holy life fulfilled, who has done what had to be done, laid down the burden, attained the goal, destroyed the fetters of being, completely released through final knowledge. However, his five sense faculties remain unimpaired, by which he still experiences what is agreeable and disagreeable and feels pleasure and plain. It is the extinction of attachment, hate and delusion in him that is called the Nibbana-element with residue left.Silavant Sutta: Virtuous
As i see It, it is the “impairment” of Intellect faculty by removal of the ignorance element that is spoken of in this way.
As for namarupa and vinnanakhanda. Khanda means a heap or a group, meaning any kind of consciouness, past, present and future. It does not say any consciousness of non-arahant or groups of consciousness associated with ignorance.
There are also refutations to such expression which can be pulled up;
“Then which things should an arahant attend to in an appropriate way?”
“An arahant should attend in an appropriate way to these five clinging-aggregates as inconstant, stressful, a disease, a cancer, an arrow, painful, an affliction, alien, a dissolution, an emptiness, not-self. Although, for an arahant, there is nothing further to do, and nothing to add to what has been done, still these things — when developed & pursued — lead both to a pleasant abiding in the here-&-now and to mindfulness & alertness.”
There are other Sutta wherein it is affirmed that an Arahant is not without vininnanakhanda and there is not a single expression in the canon saying that consciousness of an Arahant is not associated with Name & Form.
Expressions longing for and being associated with carry very different meaning and the way “associated with” is used in for example the Vibhanga Analysis of Aggregates;
Consciousness associated with painful feeling is gross; consciousness associated with pleasant also with neither-painful-nor-pleasant feelings is subtle. Consciousness associated with pleasant and painful feelings is gross; consciousness associated with neither-painful-nor-pleasant feeling is subtle. SuttaCentral
It is imo therefore a disagreeable way to express; an Arahant is without delusion and does not long for name&form. Because it is imo naturally misunderstood when one says ‘consciousness of an arahant is not associated with namarupa’