Are the "seven stations of consciousness" and "two dimensions" in DN 15 meditative states, cosmological realms, or both?

In the Dīgha Nikāya 15 (DN 15), the Mahānidāna Sutta, the Buddha outlines a a complex stratification of "seven stations of consciousness" and "two dimensions" > “Ānanda, there are these seven stations of consciousness and two > dimensions. Which seven? > > “There are **beings with multiplicity of body and multiplicity of > perception,4 such as human beings, some devas, and some beings in the > lower realms. This is the first station of consciousness.** > > “There are **beings with multiplicity of body and singularity of > perception, such as the Devas of Brahmā’s Retinue generated by the > first (jhāna) and (some) beings in the four realms of deprivation.5 > This is the second station of consciousness.** > > “There are **beings with singularity of body and multiplicity of > perception, such as the Radiant Devas. This is the third station of > consciousness.** > > “There are **beings with singularity of body and singularity of > perception, such as the Beautiful Black Devas. This is the fourth > station of consciousness.** > > “There are **beings who, with the complete transcending of perceptions > of (physical) form, with the disappearance of perceptions of > resistance, and not heeding perceptions of multiplicity, (perceiving,) > ‘Infinite space,’ arrive at the dimension of the infinitude of space. > This is the fifth station of consciousness.** > > “There are **beings who, with the complete transcending of the dimension > of the infinitude of space, (perceiving,) ‘Infinite consciousness,’ > arrive at the dimension of the infinitude of consciousness.** **This is > the sixth station of consciousness.** > > “There are beings who, **with the complete transcending of the dimension > of the infinitude of consciousness, (perceiving,) ‘There is nothing,’ > arrive at the dimension of nothingness. This is the seventh station of > consciousness.** > > **“The dimension of non-percipient beings and, second, the dimension of > neither perception nor non-perception. [These are the two dimensions.]** ~ DN 15 Is the Buddha here describing subjective, internal states of consciousness that can be directly known in meditation, or externally existing cosmological realms that other beings inhabit? This ambiguity is especially pronounced in the case of the “dimension of infinite consciousness.” Is this to be understood as a temporary mental perception - an internal expansion of awareness beyond form - or does it point to a more ontological reality in which consciousness itself is experienced as boundless? If so, what does this imply about the nature of consciousness: is it something objectively infinite by nature, or is any perception of “infinite consciousness” merely a constructed meditative perception, still within the conditioned world, and thus ultimately impermanent?