The HDMI ARC works perfectly. You provide the soundbar with power and connect the included HDMI cable to your TV and the soundbar immediately picks up the sound. The subwoofer also just plugged in and without even having pressed a button, it joined in nicely.
Connecting to Google home is also a piece of cake. The assistant works very well with the soundbar. The Chromecast function is only intended for audio and does not stream the image to the connected TV.
The sound of this set is more than fine for this price range. With music a nice full sound and with speech good intelligibility even when the volume is lowered. The subwoofer complements nicely and is not too emphatically present.