Yes it does haver some explanation.
But is does not include an example with real and easy to calculate numbers.
My opinion is: without real numbers it is much harder to understand as with numbers. Anybody who has understoond how it works has no problem to follow the explanation wihout numbers. To anybody who has never heard before about non-blocking timing it is much harder to understand.
So leaving out the real-number-example is what I call
the experts blindness for beginner difficulties.
A teaching-expert is a person that is a double-expert:
expert for the thing itself
and expert for beginners difficulties
best regards Stefan