This question already has an answer here:
With the release of Metal Gear Solid V: The Phantom Pain, there has been an influx of mgs-5-the-phantom-pain questions on the board.
In this particular case, a user has simply asked for a story explanation of the metal gear universe. Not so simple, as it turns out, as there are many games - each with a very heavy cinema-based plot. Luckily, it appears to be a self-answer, and there was no required debate about the "broadness" of this question.
While the user has done a superb job, as far as I can see, they have spread their answer out over two separate answers. What should be done about this? Should the answers be merged, or left as they are?
I personally see a couple of potential issues.
An alternate answer between the two parts would add severe inconsistency, for one. While the user posts a link to the alternate part at the top, simply having a different answer between the two could make it difficult for some users to notice that they are two halves of the same answer.
Given that they are two separate halves, they also do not individually stand as "answering the question". I would argue that together, they do, which is good enough.
If one of the answers gets down voted significantly, this would become a "broken answer", as down voted answers do not appear to all users (AFAIK). I think this would be unlikely, due to the work put into it.
My question is, what should be done in the case of an answer that spreads multiple posts?, as opposed to "what should be done when the asker asks for multiple answers"