When you use Row Owners, users will not have access to any rows of data that they do not own. They will only have access to data where they are a row owner. I would imagine that this also applies to comments/chat.
When you use Row Owners, users will not have access to any rows of data that they do not own. They will only have access to data where they are a row owner. I would imagine that this also applies to comments/chat.