No need to wonder.
The Occitan Wiktionary page https://oc.wiktionary.org/wiki/occitan says “Del latin medieval occitanus, que se tròba dins lingua occitana. Derivat de òc, benlèu sus lo modèl de aquitanus.” – the English Wiktionary page of same says “From Medieval Latin occitanus in the phrase lingua occitana, Latinization of langue d'oc. The ending -itanus perhaps after aquitanus.”
And Occident https://www.etymonline.com/word/occident “late 14c., "western part" (of the heavens or earth), from Old French occident (12c.) or directly from Latin occidentem (nominative occidens) "western sky, sunset, part of the sky in which the sun sets," noun use of adjective meaning "setting," from present participle of occidere "fall down, go down" (see occasion (n.)).”
Somebody would have wondered about the connection before, surely.
Even though I didn't particularly take to the sprinkling of profanity and hip-hop lingo I think "on some Slavic shit" roughly translates to "on some Slavic thing/trip" and isn't intended to be derogatory. Am open to corrections here.
The rest of your post I'm having a hard time disassembling. I don't think you can just free associate from one language to another switching between written and spoken changing alphabets along the way and between past and present. I mean, if you actually did come up with a valid and novel derivation of something that's the kind of thing one could put into a paper get peer reviewed and published.