this was misnamed as some "Dutch dialect" on another forum (hence not identified since nobody spoke that mysteriously rare "Dutch dialect" ), later, when I listened myself, I was 99% sure it could either be:
"Technically", that plethora of "-onje" / "-anje" words as well as "-owie" words let me think of either Slovenian or Polish
Well I can find some myself meanwhile, but not with that lot of background noise as here, since the languages are VERY alike (as e. g. Danish and Norwegian are in Scandinavian languages)
Thanks in advance
edit Both Croatian and Serbian as well as both Bosnian and Macedonian are now ruled out "candidates"! Hence, one of Czech / Slovak might be it. Polish is unlikely as well, but who knows...