Yes, they are broader projects, although it's too early for a proper announcement. They make sense together, hence why CCTV is under C2SP, but they have different motivations.

C2SP is an experiment in producing specifications applying techniques from software development, including semantic versioning and the concept of a maintainer. It was borne out of displeasure with the pace and output of the IETF's CFRG, which is taking years to publish ready-made documents like ristretto255, and makes complex protocols with lots of sharp edges and moving parts, as well as being generally a pain to engage with.

CCTV is a place to pool test vectors, so we don't have to keep reinventing them for each implementation and we can cross-pollinate our test coverage. It's also a place to drop new vectors to test for newly found edge cases or issues. You can think of it as an open Project Wycheproof.