Vennemann posits that starting in the fifth millennium BCE, Atlantic/Semitidic seafaring colonizers (related to Semitic speakers) settled the coastal regions of Western and Northern Europe.
The toponymic (place-name) links are tenuous and can be explained by other linguistic families. Europa Vasconica-Europa Semitica
This "substrate" influenced the vocabulary and structure of the languages that eventually replaced them. Vennemann posits that starting in the fifth millennium