Have any advanced practitioners reported direct realization of the “dimension” described in Udāna 8.1?

Udāna 8.1 describes what appears to be a radically transcendent “dimension” — one beyond the elements, the formless attainments, and even beyond movement, time, and dualistic perception. It is characterized entirely by negation, culminating in the phrase: "just this is the end of stress/suffering."- > There is that dimension where there is neither earth, nor water, nor > fire, nor wind; neither dimension of the infinitude of space, nor > dimension of the infinitude of consciousness, nor dimension of > nothingness, nor dimension of neither perception nor non-perception; > neither this world, nor the next world, nor sun, nor moon. And there, > I say, there is neither coming, nor going, nor staying; neither > passing away nor arising: unestablished, unevolving, without support > (mental object). This, just this, is the end of stress. Have any advanced practitioners, past or present, claimed to have directly realized this dimension? If so: - How was the realization described? Was it marked by total cessation, a kind of knowing without content, or something altogether ineffable? - Was there awareness during the experience? Or did it resemble the cessation of perception and feeling (nirodha-samāpatti), with no consciousness during and only retrospective insight after? - How was the transition into and out of this dimension understood? Did it feel like a gradual absorption, a sudden drop, or a shift beyond all experience? - Did practitioners interpret it as a momentary event or as the uncovering of a timeless truth? In other words, is this dimension entered, or is it recognized as always already the case? - What changed after the experience? Were there shifts in perception, identity, or sense of reality that aligned with the description of “no coming, no going” and “no this world or another world”? ---------- I understand that language may fall short in describing such a realization, but I’m curious whether any teachings or testimonies exist that give practical or phenomenological insight into what this “dimension” might entail — and whether realization is framed as a momentary insight or an ongoing mode of liberation.