This reminds me of how so many "rumors" actually start out as rampant speculation by one reporter, and then we get a game of telephone as reporters report what other reporters are saying and it suddenly morphs from speculation to a rumor.
For instance:
1. A reporter, let's call them "Eric Fieldman" reports that "he thinks" the Pens are interviewing Stan Bowman.
2. Another reporter, let's go with another made-up name: Bob Fossi, then reports that Fieldman "said the Pens are interviewing Stan Bowman."
3. From there, another reporter, let's call them "Aaron Rager", then reports that "I'm hearing that the Pens are considering Stan Bowman" to be their new GM". He may or may not refer back to Fossi's story.
4. Fieldman then reports that "according to Aaron Rager, the Pens are interviewing Stan Bowman, confirming what I said a few days ago!"
And thus, it becomes "rumor". The sad thing is that you can often watch this happen in real time, and if you bother to refer back to the previous links in the chain (when they bother to mention their sources), you can often find the original "reporting" was couched in speculative terms.