Quote Originally Posted by oudysseos View Post
There just doesn't seem to be any evidence of massive divergence- to the extent, of course, that there is much evidence at all. And we do have to consider that personal names might well persist longer than other parts of speech. But still, the Italian Boii aren't reported as speaking a language incomprehensible to the Senones, for example. The most divergent seems to be Celtiberian, at least in its written form.

The truth is there are many equally plausible scenarios. One critique to raise to my minimal divergence theory is how then is language congruency maintained?
Yes, that's what I was wondering about. Thanks for explaining.