a) many would tell you that he did just that last season.
b) has he ever genuinely done that?
He didn't. He did a decent job of scoring goals (exceeded his xG) and that's it.
I'd say so for Portugal at numerous points. He's never played for a club side weak enough to need to, but he was definitely capable of it in his final 2 seasons at United & whilst at Madrid. He was also pretty incredible for Juventus for at least one season.