I don't think you're doing us, yourself, or them any favors by emailing them like this. While you might think that you've asked questions that they could respond to, that's a matter of opinion, and I think they are right to err on the side of caution.
Notice that in his email, Varney did nothing more than reiterate almost word-for-word what was said at the SHM. He's not going to tell you something new, period. The exchanges with Varney are all vaiants on "are we there yet?".
What's bothersome to me isn't their silence, it's that when they volunteer information about timelines, this information has been wildly off.