With my Fire TVs and Fire Sticks I can easily tell Alexa to change inputs by saying "HDMI 1". This does not appear to work with the TiVo Stream 4K. It may be why there is an input button. Only problem with that is some TVs take a long time to change inputs without being able to select the TV's enter button on another remote. Along the same lines of thought, with the Fire Stick, if I press the home button, it automatically changes to the HDMI input it is connected to. This also does not appear to work with the TiVo Stream 4K.