Can you hide comments in a Proof so a client shared to the sheet cannot see them?

Good morning! I don't believe it's possible, but wondering if there's any way to hide comments from a client that has been shared to a specific sheet. In this scenario, we have a proofing queue we utilize to share specific documents undergoing development with a client. Sometimes though, we'd like to "chat" back and forth regarding a specific line item/proof, but we don't want the client to read them or chime in. From my experience with SS, I don't think it's doable, but figured it couldn't hurt to ask!

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