I've told the CTO that he needs to push the CEO for some specific things I've needed, that he needs to be more assertive with certain issues, that he shouldn't talk to the teams I'm running because he confuses them, and many other instances like that. He's followed feedback every time I gave it, usually immediately.

I try to do the same when my reports give me feedback, and they've also been satisfied with it. Most recently, I was told I shouldn't abstract things too quickly, which was good advice, and following it has gotten good results.