What is a recording? Does a 10 millisecond delay mean it is a recording? What is the legally binding lock-out time for this audio stream before a human can listen to it?
There is no legally binding lock out time because there doesn’t need to be. Live-listening is impractical at scale and also worthless for what the article is describing they do with the data.
Remember, this work is being done to make it so humans don’t have to be in the loop.
Because there is no value in doing so. A person could collect all the spare change thrown into fountains at shopping malls, but they don’t.