No it’s common sense because officers generally aren’t as up to speed on the rules of court proceedings as attorneys are. Their job is to gather evidence and give it to the attorney who then decides whether or not its enough to warrant seeking prosecution. In the real world anyway.
The thing is, the server is kind of a red herring in a way. Even if she would have only been using a government account and the server didn’t exist, it would have still been improper to discuss classified information over the open email system. From what I understand, her using a private email doesn’t change that.
Irrelevant to what I said. The email chains she was on were over the open email system. Even if she was not included in those chains, they would have been improper.