[knot-dns-users] Chained catalog zones

Hi folks, Is it possible to chain multiple upstream catalog zones into one downstream one? I do have the following topology: Multiple DNS hidden masters <-> DNS signer / DNS master for public facing slaves <-> public facing slaves Can I define catalog zones on hidden masters and use them on public-facing signer/master to compose a catalog zone for the slaves? Best Regards, Martin Hunek Freenet Liberec, z.s.