Is a Compass-Keller Williams Merger In the Works?

[UPDATED WITH RESPONSE FROM COMPASS]

This will be a brief one, but it's so interesting I had to share. I just got off the phone with a very senior executive at a major national brokerage who relayed a rumor that he or she has been hearing from other senior executives throughout the industry that the flirting between Compass and Keller Williams has intens…