Many years ago I read a printed compilation of verses translated into English without citation as to source (but alleged to be from śāstra), and without the Sanskrit. One of these stuck out as interesting, and I paraphrase it roughly as follows:
In Satya-yuga, devas and asuras resided in different lokas (planets); in Tretā-yuga, on different continents; in Dvāpara-yuga, in different cities; but in Kali-yuga, they reside within the same body.
While this makes logical sense as referring to daiva-sampat and āsura-sampat (as described in Chapter 16 of Śrīmad Bhagavad Gītā), I have not found any statement like this in any Purāṇa. Has anyone heard this from an authoritative source or has even a hint of a reference or attribution?