IE Anatolian presence in Greece?

Hi,
I read somewhere (I can't remember where) about an early IE
Anatolian presence in Greece and that they may have preceded
Hellenic speakers in Greece. Is there any evidence of an Anatolian
substratum in Greece or the Balkans? There's some scholars who
believe Homer may have been a Luwian refugee. I wonder about a
Luwian migration into Greece, the Balkans and Illyria. I find it
interesting that there are the Dardanians (i.e. Trojans) mentioned
in Western Anatolia, who may have been Luwian speakers, and also an
Illyrian tribe called the Dardani in Europe. And the Dardenelles
may have been named after them, which would seem to indicate a
migration of them into Europe, where they must have
become "Illyrianized". Thoughts?

-Michael