How to connect to HomePods second generation to Bravia, Sony TV

You cannot. The HomePods are not traditional Bluetooth speakers and cannot be connected to non-Apple devices.

You can connect the HomePods to an Apple TV connected to the Sony Bravia or to an iPhone, iPad or Mac.

click here ➜ Set up home theater audio with HomePod or HomePod mini and Apple TV 4K - Apple Support

even if the tv support airplay 2 then it supports it as being the recipient not the transmitter, so it would be acting the same airplay role as the homepods are