I stumbled on this on YouTube and found it well thought through and informative, gives a real (if only partial, as the encoding process is not exposed) insight on to the inner workings of MQA and where it sits in the streaming hierarchy. Worth a watch, be interested in others opinions on this certainly considering Tidal vs Qobuz as one example. I have both but find myself leaning towards or even needing Tidal less and less, to the point of likely letting it go and focussing only on Qobuz moving forwards.