Connecting DirecTV streaming box through a surround sound system to TV

I presently have DirecTV streaming service.  The box connects to the back of my LG TV through the HDMI 1 port.  I want to be able to insert my surround sound receiver into the system to play surround sound through the TV.  
LG TV - OLED77C8PUW

Pioneer Surround Sound receiver- VSX-LX503 Elite