[Cronos]

Culturally there's no link. Correct.

The present day inhabitants would have descended from them, only culturally adopted the invaders culture (as happened in Celtic France, Spain etc.)

You could say the same thing about Stonehenge

[Cronos]

Stonehenge...

And before you say that the Brits didn't try to destroy Stonehenge, do recall that they destroyed the original crown jewels during the English civil war and countless abbeys were looted and destroyed under Henry the 8th, with a lot of the cultural heritage lost.