blakhoi versus dakai

From: altamix
Message: 13793
Date: 2002-06-09

I found a critic sentence regarding the text of kaekaumenos in his
Strategikon and the link made by this one between wallachs and
dacians.
The url of this passage can be found at:
http://www.hungary.com/corvinus/lib/chk/chk05.pdf
here is the text:
...............................
This group of people could not be linked to the Bessi; another source
of identification had to be found. Kekaumenos chose Dacians. In all
probability the similarity between Blakhoi and Dakai (in contemporary
Greek pronounciation) had to do something with it.
..............................

Questions:

a)-what is supposed the greek pronaunciation to be?
b)-is indeed posible to be a such connection/mistake and from "dakai"
to result "blakoi" ?