I just had an answer to the question What can someone do while forced to doff armor from the heat metal spell removed, with the suggestion that it might be better as a comment.
I initially started writing the response as a comment on an answer that had a significantly incorrect part to it. However a comment was not long or detailed enough to have made it clear what I meant. The response appeared to be a partial answer even though in a "negative" manner (as in the opposite sense, not in the "this is rubbish" sense: it is a good question).
It seems cumbersome to ask another question and answer it myself, and then to refer to that from a comment, but this appears to be the only way of providing a detailed response to an answer with an issue in it other than writing a full answer.
What is the preferred way to respond to an incorrect answer when a comment is not long or detailed enough and your response is not perceived to be a full and/or direct answer to the question?