When I was growing up in the 70s, the Oldies were the 1950s and Classic Rock was in the 1960s. Now Oldies are the 50s and 60s while classic rock is the 70s and 80s. Then comes ... I don't know?
What does Classic Rock mean to you? And is it really a term that means anything besides "music before today"? It can be anything at all, sound-wise ...