Most of smart TVs are generally equipped with HDMI ARC port. If your sound system has ARC input, it will allow you to enjoy better performance through a single HDMI cord.
Optical Toslink SPDIF
If you have multiple sound receivers and don’t want any one of them is sitting idle. A simple solution allows them to work simultaneously is digital optical audio splitter, which is is also referred to fiber optic splitter or SPDIF toslink splitter.
Smart TVs equipped with buit-in OS and installed apps (such as Netflix, Amazon Prime Video, HBO,etc.) have been more and more popular, It’s more convenient to enjoy movies, music, online games without extra source devices required.