I have Sky+ connected to a Toshiba 32WL48 and Toshiba Home Cinema system. The Sky system connecs to the TV via a high-quality scart. There are two basic options for feeding Sky sound to the Home Cinema. Either an optical feed from the Sky decoder or a dual phono feed from the TV. The benefit of the second is that when I switch the TV on and off the sound switches with it. The question is - does the phono feed from the TV contain the Pro Logic signals so that if a film is broadcast with multi-channel audio it will be decoded?