On the other hand, it is my impression that whenever I hear the word
{Qo'noS} I actually hear "Kronos"; my problem being that I hear an "r"
being spoken, which according the tkd shouldn't be there.

There is no r.

q is to Q as t is to ch. It's made with more or less the same tongue position, but some air forces itself through briefly, but not continuously. And remember that q is not k.

-- 
SuStel
http://trimboli.name