What sort of conclusions do you want more explanation for? If you're curious about, for example, how I determined that the Windows/386 executable format was in the Xenix x.out format, I didn't. Geoff Chappell examined/disassembled the WIN386.EXE loader to see how its loader code lined up with the contents of the WIN386.386 file, and Michal Necasek of the OS/2 Museum immediately noticed obvious similarities between the format described by Chappell and the Xenix x.out format. After examining the WIN386.386 file, he found that it did indeed line up with the x.out format. It is worth noting that this specific finding was a late edition to the article; I send a draft version of parts of it to Necasek who informed me of this fact, so I rushed an edited version to Neozeed hours before he posted the article on his Patreon (which occurred a few days before the posting to the blog). As it happens, Necasek had noted that Windows/386 used the x.out format in a comment about a year ago on one of his old articles about Windows/386, though I hadn't seen it.

If you're curious about anything else, I'm happy to elaborate.