Hello, greetings from sunny Shoreham-by-Sea! A simple question, I think. At the moment on my Samsung smart TV I have Sky coming up on AV1 and my VCR on AV2. If I add some sort of 'stick' to the set up - Roku, Firestick or Chromecast - will that come up as an additonal AV, AV3 probably, if that makes sense? Being something of a techie eejit I don't want to make the set-up too complicated to use. Many thanks!