Prince Harry and Meghan Markle have "had enough oxygen".The actress' brutal put down comes as she detailed her adoration for his brother Prince William and his family.The 88-year-old says she is not keen on talking about the Duke, 37, and Duchess of Sussex, 40.However, the Dynasty legend branded the Duke of Cambridge and wife Kate Middleton, both 39, "great".She said the couple "do a lot for the country" as she compared them to Harry and Meghan.Speaking in a new interview, Joan refused to be drawn into conversation about the latter.When asked what she "made" of them, she is said to have flashed a "look of disdain"."I feel that they've had enough oxygen," Joan stated."But what I will say is that I absolutely love Kate Middleton and Prince.