Apples own marketing places these items conveniently in that category. Its not a stretch. Im not so naive that once Apple figures out a marketing way to bring these devices together where they can make everyone upgrade (ie. profit from it) they will.
Simply connect Apple TV, HomePod mini, and other accessories to experience a smart home that runs flawlessly across your devices.
www.apple.com
High-fidelity audio. Intelligent assistant. Home hub that works across devices. HomePod is a powerhouse speaker with the privacy of Apple built in.
www.apple.com
HomePod mini. A smart speaker with room-filling sound. An intelligent assistant that helps you control your smart home. 100% private and secure.
www.apple.com
Also, I'm a 2x HomePod Mini owner that has to create a workaround to use them as computer (iMac Pro) speakers. I like these products. I also have an Apple TV with a Sony 7.1 HTS. I'm not against these products, but its obvious and even with the current tech inside of them, that they should work together as an HTS and Apple is just buying time until they make this a profitable endeavour.