@Sviatogor Yes, I understand. I was just saying that part of the south Slavic languages seem closer to west Slavic languages and the other part closer to eastern Slavic ones, while a clear line would be hard to establish between the two due to gradual changes. Of course Slovene I would imagine is the closest to the west Slavic languages.
I would love to see those studies though. I’m always interested in some good material.