EY has tweeted to Elon, they're aware of each other. Also Peter Thiel is a major MIRI donor and was a co-founder of PayPal with Elon (and an investor in many of his ventures). I'm pretty sure if EY wanted a backchannel (or a meeting with) Elon it would be easily obtained.
"I'm increasingly inclined to thing there should be some regulatory oversight, maybe at the national and international level just to make sure that we don't do something very foolish."
http://www.cnet.com/news/elon-musk-we-are-summoning-the-demon-with-artificial-intelligence/#ftag=CAD590a51e