A:AnswerThis may be possible, you can add a usb-c dock to the google tv and then plug in other devices like webcams or keyboards.. you would need a dock that has a 3.5m slot or, what I would do, is find some 2.4ghz headphones (low latency) and a USB dock with power delivery.
A:AnswerSpectrum TV app works to cast to the Chromecast with Google TV when a phone or tablet is used to cast/control it. But the Spectrum TV app is NOT available to download directly to the device and control with the included remote. Disappointed to discover this after purchasing. Roku devices can run the Spectrum TV app directly on the device and be controlled with the Roku remote. The Spectrum app runs well on Roku. Expected the same functionality on this new Chromecaset with Google TV without having to do work arounds but it’s not there yet.