If I see a question about a certain topic and want to ask a supplementary question about it, where should I ask it? I'm afraid a new question will be marked as a duplicate, and heavily downvoted so that it is not shown in the list of questions on the homepage.
Should the supplementary question be asked as an answer to the earlier question? Or should it be posted as a comment? What if a user cannot do this, because of low reputation?
This might have been asked before, but I could not find any meaningful results when searching for "supplementary question". Also, while writing this question I have checked the list of "Questions that may already have your answer". I found two identical questions which look similar (after using Google Translate to my native language), but their content is different from what I'm asking here.