I explained the need for breaking down the problem into actionable tasks - then find an expert in each of those areas and contact them with a list of questions that will allow me to find out all the relevant information and get a better understanding of the job. Only then would I start to create any wireframes, coding etc.
Asked about my responses to the questionnaire they asked to be filled in prior to the interview, they asked for examples to back up my claims. What have you done? Examples of work Why I left my previous employer? What my plans were in the coming years? Anything I wanted to ask them?