Nope. As others have pointed out, every cast has to begin with a call to google.com (which is why chromecast must be connected to the internet). The call basica

Nope. As others have pointed out, every cast has to begin with a call to google.com (which is why chromecast must be connected to the internet). The call basically sends an id number to google, and then google returns a URL of where to get the code for that cast.