I have an LG smart tv 4K UHD and a samsung home theatre 5.1 (no Bluetooth). Both have hdmi arc. But I'm unable to connect them while watching tv from my receiver cable tv or at any other time. I'm not able to use the other hdmi port and the hdmi arc connection at the same time. In fact i need help in using the home theatre while using Netflix etc on tv. Please do help. Thanks in advance.