Found some info on the OZ site
Hi @jason - the documentation you provided is a great starting point. You can think of Fireblocks + OpenZeppelin Defender as complimentary solutions. Fireblocks is securing your private keys that are used to deploy and manage these smart contracts, and OZ Defender is an additional layer for creating secure workflows around smart contract management and deployment. You will want to make sure that you whitelist the relevant addresses for OZ Defender and your deployed smart contracts, as well as ensure that your Fireblocks TAP policies allow for adequate access to these deployed smart contracts.