You are going too far. There 4 matches before Fed and Delpo never was that great indoor to count his presence in the final to be done deal. I don`t think he can/is/should think about Fed already.
Look at the draw. If he's playing minimally well, who is going to stop him before the final? He might not be great indoors, but surely has a big edge over all his potential opponents till the final, would be a surprise if he lost.