It is a fact of life that successful on-pitch captaincy means being able to develop a rapport with the man with the whistle, so you can confirm interpretations, clarify decisions and, inevitably, try to get the best deal for your team.
I recognised it as a core responsibility when I was captain and I worked hard to be visible, respectful and enquiring towards the ref. It might have annoyed the opposition every once in a while but, then again, they're the opposition, so no real harm done.
I see the same approach from McCaw. These days, players and referees know each other better than ever - with a small pool of top flight officials and up to 15 internationals a year, they bump into each other much more regularly than in my day, but the same principles apply.
You have to get noticed and make refs warm to you, because if you do, you can talk to them throughout the game, pointing out specific elements you'd like them to look at, or highlighting issues they haven't clocked.
It also means that when a difficult split-second decision has to be made, the referee might give you the benefit of the doubt - as I suspect happened last weekend, where McCaw survived a potential yellow card incident.
On that evidence, Richie would certainly seem to be learning the art of playing referees. Because of his position, he has to live right on the edge of the boundaries set by the laws. In that game, I saw him play some of his best rugby.