I'm not disputing the recollections that they are both Astros employees, but if they are, why not just come out and say that they will be in the booth next year? Also, if they are Astros employees, why the "limited contact" as reported in the blog?
The theory that Brownie is contemplating his future and that has clouded things is plausible, but it doesn't explain why there has been no info on JD, or no clarifying statement from the team or Comcast. Just come out and say "JD will return, Brownie is welcome, and if he chooses to reduce his role, that scenario is welcome also."