"C thinks I should be more verbal with H and speak the truth in love. Tell H his behavior is destructive, in a non-attacking, non-blaming way, but don't expect change. I am not sure how I can word this in such a way that H will not take offense to it. I want it to sink in, but he has the wall up high not only to me, but to everyone."
Well if this is something that is new and different and the outcome you expect is what you want, then why not try it? Be careful with the expectations and potential for disappointment.
And this may be something where timing is important. In other words, don't just blurt it out at the first opportunity. Wait for the right moment and give it a go. Think about what you want to say and how you want to say it ahead of time. Practice the delivery and see where it leads.
Me51 W53 S17 S14 M22 T25 Bomb-9/11; A-11/11; I move out 11/11
It's easy to find our bottom, it is our top that requires cultivation.
Every rough spot adds to our emotional constitution. -Barney Fife