Source: pp 152-153, A Concise Introduction to Logic (12 Ed, 2014) by Patrick J. Hurley
[p 152:] The fallacy of complex question is committed when two (or more) questions are asked in the guise of a single question and a single answer is then given to both of them. Every complex question presumes the existence of a certain condition. [...]
[p 153:] The fallacy of complex question should be distinguished from another kind of question known in law as a leading question. A leading question is one in which the answer is in some way suggested in the question. Whether or not a question is a leading one is important in the direct examination of a witness by counsel. Example:
Tell us, on April 9, did you see the defendant shoot the deceased? (leading question)
Tell us, what did you see on April 9? (straight question)
Leading questions differ from complex questions in that they involve no logical fallacies—that is, they do not attempt to trick the respondent into admitting something he or she does not want to admit. To distinguish between the two, however, one sometimes needs to know whether prior questions have been asked.
How do the two differ? Leading Questions appear the same as Complex Questions to me. The grey does not distinguish them for me, because how do Leading Questions
not attempt to trick the respondent into admitting something he or she does not want to admit?