there are many ancient Greek dialects,
if you know modern Greek, it is not difficult to understand koine, at a very high degree, some even with no effort
but to be more you need more than 6 months, tenses Syntax forms etc
if we talk about Homeric or Aeolian
you need year and more, and surely a mentor
Thank you for clarifying.
I have a little theory that might explain why some words and names from Ancient Greece might make sense in Albanian as well. Just an idea so feel free to tell me why it might be wrong or right.
As far as I know all Balkan languages of the 1st and 2nd millenium BC are IE. Now, since protoIE was spoken until maybe 2500 BC, that means by the time Linear B came out, not that much differentiation would have taken place, and especially since there were other IE languages in the area, it is possible that the language spoken by Myceneans might have been still relatively undifferentiated from them.
If we compare to Italian-Romanian or Russian-Serbian, the Mycenean-Illyrian or Mycenean-Thracian split was probably of a similar time length, but the latter remained in proximity to each other while Romanians were cut off from other Latin speakers, and south Slavs were cut off from other Slavic speakers. Yet Italian is very similar to Romanian and Serbian very similar to Russian, at least for linguists.
So rather than the linguistic differences in Serbian-Albanian-Greek today, back then the gradient might have been more like Russian-Ukranian-Polish, or something similar. For example, Epirus and Macedonia are thought to have spoken special dialects of Greek, sometimes even called barbaric. This might be just because all Greek dialects came from protoIE and then developed semiindependently, but still enough in contact so that they remain intelligible. Since Illyrians, Thracians, etc were also IE, it is possible that their languages were either intelligible with whatever groups they were close to. What I am saying is moving from let's say Ionian to Aeolian to Doric to Epirotan to Illyrian, might have been like moving from Dutch to German to Danish.
Since Albanian comes from one of the IE Balkan languages of that period, trying to determine if a word is Greek or Albanian, to me seems as futile as trying to determine if a 7th century Slavic word is Russian, Serbian or Polish. Just as different Slavic cultures evolved from one and then slowly differentiated, so protoIE split into many branches, so the further back you look into it, the more obvious the relation with more than one modern branch.