This is why I wrote
> 2) Westward expansion of the MB Beakerish culture-language complex
represented a large scale or folk movement that was concentrated on
specific regions. Although maintaining a high degree of cohesion, it
also resulted in a major East-West differentiation, or the formation
of proto-Celt from post-Anatolic. Over time the western expression
was significantly altered by non-IE languages while it completely
replaced some non-IE language cores,
but not all.
This process would have a long lasting influence on both IE and non-
IE language in western Europe<
JS Crary