Imagine reading a 300-page storybook or a 300-page storybook containing 30 different stories. Which would be easier to remember? I think it would be much easier to remember a book with a single story.
This is because the events that happen in a single story are connected and we are exposed to details for a longer period of time. 30 different stories are not connected to each other and we are exposed to the details of the stories in a much shorter time.