There are three prototypes that use it, one of which is dated 10 days before development ended. And which was after the sound driver was updated and the music IDs shifted around. Yes, it was meant for that zone. We know the final theme wasn't meant for it, we know the 2P themes were made for cut zones, and we know OOZ's intended music had to have been composed, as it was one of the earliest levels conceived that survived all the way to the final game. This is something we all figured out over 20 years ago, and which has not had any new evidence questioning it with all the research done and info that's come to light since then. Even if you think it's inconclusive, it's still tangible, real evidence in its favor. Not a "vibe". The theory that CNZ 2P was actually meant for CNZ itself relies on a countless amount of assumptions that don't follow much logical thought.