If you want to Use HomePod as TV Speaker without Apple TV, the options are limited because Apple does not provide a direct HDMI, Bluetooth, or optical connection from a television to HomePod. AirPlay may work for selected TV audio or compatible apps, but it does not create the same full TV-speaker setup supported through Apple TV 4K. Apple’s official home-cinema configuration requires an Apple TV 4K, while HDMI ARC or eARC also depends on an Apple TV 4K as the audio bridge. For a reliable setup, use an Apple TV 4K with a compatible TV and HomePod or HomePod mini.