Yes both are indoeuropean languages though the distance to that common ground is far, but the grammar was ripped since Latin was mandatory for the educated class in the entire X-XIX centuries, included especially the period when Polish language was first used widely in writing.
it’s not ripped from latin, latin and polish share ancestors and the cases were inherited into both from that ancestor.
Yes both are indoeuropean languages though the distance to that common ground is far, but the grammar was ripped since Latin was mandatory for the educated class in the entire X-XIX centuries, included especially the period when Polish language was first used widely in writing.
i have no doubt latin influenced polish, even its grammar, but i very much doubt the cases of latin were transplanted into polish.