Sad I missed it, but I'll look at the VOD for sure :)
And no, it's just a bit of Math and a lot of pre-written sentences :D
And for your question regarding generative AI: I don't use generative AI, but most spellchecks use AI in some form. I used https://quillbot.com/de/rechtschreibprufung (came up first in google) and they replace all "-' by default.