Google getting its AI assistant technology into Sony’s Android TV sets is one of the easiest decisions the tech monolith has ever had to make – a move that could mount the beginning of a significant fight back for Android TV at the heart of its wider Alexa-chasing smart home push. A burning instant question we have is “Are Amazon’s Echo smart speaker devices compatible with these Sony TVs” and can its own AI assistant Alexa live peacefully alongside Google Assistant? While neither party has provided a definitive answer, the fact that the touchscreen Echo does not allow YouTube videos to be played probably suggests the two would also butt horns if an end user wanted to, for example, use…