Denny says that boldness comes from confidence,confidence comes from ensuring success. A horse having fun XC sounds like a confident horse to me, and that in turn means that you are doing the right things to ensure that. Now I'm a lowly amateur, but I'd say, well done!
We had a few moments when I wasn't sure he'd listen to the half-halt. Running down a slope to fence 5 on the BN course, I could see the fence judge backing away, wondering if the rider was going to get things in control. Luckily she did.