If you go the HDMI splitter route (which you should), the splitter needs to be positioned between the output and input device.
Ọ bụrụ na ị na-aga ụzọ ntụgharị nke HDMI (nke ị kwesịrị), ọ ga-adị mkpa ka onye nhazi ahụ dịrị n'etiti ngwaọrụ mmepụta na ngwa ntinye.