> it seems like they definitely still had spoken very similar dialects Indeed, maybe even mutually intelligible, but we can never know for sure. > Sanskrit h

> it seems like they definitely still had spoken very similar dialects Indeed, maybe even mutually intelligible, but we can never know for sure. > Sanskrit has insane overlap in lexicon with modern Lithuanian Not just lexicon but grammar also: they have very aligned case systems, for example. In the case of Lithuanian what you are seeing however is an extremely conservative language. Many ancient IE languages, not just Sanskrit, have a lot of overlap with Lithuanian.