I have an LG E8 65in and a Sony HT-XF9000 Sound Bar, both acquired within the last few days. As I have multiple content sources (Amazon 4K Fire Stick, SkyQ box and Sony UBP-X700 4K Blu-ray player) I have connected them to the E8 as follows: Fire Stick to HDMI 1, SkyQ to HDMI 3 and Blu-ray player...