How does receiving boosts from REQ packs work?

So, I started playing BTB recently, like more than often. Strangely enough, I noticed that if more REQ points going towards my gold pack come from Arena, I get Arena boosts. Yet if they come from playing Warzone, I get Warzone Boosts.

Am I onto something, or am I mentally unstable?

No idea of what the answer could be. But if you are correct, I applaud you on finding that, and I applaud 343i for implementing that system (even though an “I just died a bullsh*t death please give me my valuable REQ back” system for Warzone would be much more needed…)

That hasn’t been my experience. It’s random. During the period I cataloged the content from 8 gold packs, I was playing exclusively WZ, didn’t even qualify in Arena that period. I was awarded 8 Arena boosts and 8 WZ boosts in those packs.