I don’t have the time or energy right now to give this the fuller treatment it would deserve, but what if the one sourced information from a confidential source has to have an independently derived second source to use and confirm the original source? No matter how reliable and trustworthy the original source may be, one will want to preserve that original, ultra-reliable confidential for later and other use. Lawyers see this, law enforcement see this, journalists see this, investigators see this.
That is the reality of this. Back during Nixon’s time, Ben Bradley, then the Executive Editor, insisted of Bob Woodward and Carl Bernstein that any confidential information had to have two independent confirmed sources to any fact they reported. You can watch the film,”All The President’s Meet or read the source book to see how that works.
In any event, I believe we’re waiting for that reliable second source.