If I understand your question right, this won't help. What I think you would need is something like a Y-cable HDMI, and to my knowledge they don't make these. There is a product NYKO makes called a a Console Selector that may work. You would basically plug your bluray and cable box into the HDMI IN ports on it, then the HDMI OUT would go to your TV. Then you can select which HDMI connection flows from the selector to your TV. Hope this helps you out, and if you go with the Console Selector, be careful because I have had two and on botj of them the micro usb power port has snapped off, so be cautious or try and find another brand.