The story should never stop, not in a ballet, not in an opera, not in a story. When the story stops (in a ballet, an opera, whatever), all that’s left are technical exercises.
The more you consistently read in such great quantities, though, the harder it is to be caught in a story’s spell. You learn the tricks and see the hands moving…this is also one of the signs of a story that gets its spell off and holds its reader: you never see what’s coming, the trick retains its secrecy and mystery, it remains magical despite your best explanations.