In this question, the answer answers the question posed in the question text. But the question posed in the question title is actually different, and may also be interesting. What are best practices in this situation?
Edit question title, possibly ask the 'title question' as a new question?
Consider the answer incomplete?
Context, and my own thoughts: Usually, I would not hesitate to follow route 1, but in this case I am both the one who asked and answered the question, so I thought it would be best to check up on best-practices. To avoid misunderstandings, I want to note that two years passed from the time I asked the question until I answered it. At the time when I wrote the title, it did not occur to me that the title might be conceived as misleading.
To be clear, I am not asking specifically what I should do in this particular instance, but rather what the best practice is when there is a discrepancy between question title and text, along with an answer that is aimed at the question text. In other words, disregard the fact that I happen to have posted both the question and the answer.
Somewhat related questions have been asked on meta before: Editing a contradiction between the title and text of a question and Retitling Questions: a modest proposal.