From what I've heard that type of information is only held on a special higher-security "logs" cluster and the code accessing that data is subject to additional

From what I've heard that type of information is only held on a special higher-security "logs" cluster and the code accessing that data is subject to additional review by Google's privacy division before it is allowed access to the data. I think there may be special ways to manually access some of that data, but even requesting that capability would automatically trigger an audit after the fact.