[ceph-users] Is a direct Octopus to Reef Upgrade Possible?

Hi ceph-users, I currently use Ceph Octopus to provide CephFS & S3 Storage for our app servers, deployed in containers by ceph-ansible. I'm planning to take an upgrade to get off Ceph Octopus as it's EOL. I'd love to go straight to reef, but vaguely remember reading a statement that only two major versions can be taken on upgrade. I've failed to find that statement again. Is it possible to go directly from Octopus straight to Reef? I think a sensible approach here is to first migrate our existing deployments to use cephadm, and then use cephadm to upgrade. Any advice on this very welcome. Many thanks, Alex