I know reading is hard, but the Rocky Linux project and SUSE have not teamed up. That is an entirely CIQ endeavor. The project's blog post from some time ago also explains the two avenues they're going down for their clone.
P.S. for other commenters. A fork is NOT a distro. If someone forks a project (as the shape of a fork implies), they go their own way. So if Oracle and SUSE fork RHEL, good luck on standardizing "enterprise" Linux.