Well, if you actually played hockey (like my brother and I played football in the back yard), then it was a sport (assuming we use competition as the dividing line, which is a highly subjective place to divide it, but I have to use something). My comment about boxing was that I could go to a boxing gym and never compete in boxing. I'd spar, but not to track points, etc., just to work on the skills. To me, that's not "a sport", though by some definitions, it is "sport".Something I just thought of. When I was a teenager me and my friends would spend hours playing hockey, doing hockey drills, etc. On the street by my house. None of us were part of a team, or had intention to compete/be part of a team. Does this mean hockey was not a sport for us?
The same could be applied to your hockey. If you guys only ever did drills, then a case could be made that you weren't participating in the sport of hockey - just doing drills that were developing hockey skills. It's all pretty subjective, which is part of my objection to some of the blanket, black-and-white statements about what is and is not a "martial art". No matter how carefully the line is drawn, there's always going to be something that clearly falls on the "wrong" side of the line.