Good question, seeing as how there is no such thing as the (or a) "Theory of Cosmological Evolution". There are various theories within the field of cosmology that attempt to explain the evolution of the universe, or of galaxies, or of stars, etc, but these theories all have names (few of which include the word evolution, and NONE of which include the word "darwinism," "orthodox" or otherwise).
BINGO!
There for the statement "evolutiuon has nothing to do with cosmology" is false.