Afaik, firewalld doesn't speak nftables (the tooling, not the backend). At least, in the sense that if you use nftables (the high level tooling/config) and fir

Afaik, firewalld doesn't speak nftables (the tooling, not the backend). At least, in the sense that if you use nftables (the high level tooling/config) and firewalld (the high level tooling/config), there will be some incompatibilities. So it's either/or.