I am surprised that there is no comment on the evidence that the cabin crew were trying to contact the cockpit but were ignored as the flight crew focussed on apparently more urgent things. It seems to me that was an opportunity to learn something important that was lost. Perhaps it would help if the cabin crew had a means of indicating a fire with a simple button that would show an indicator somewhere on the instrumentation, that might be more easily integrated into the thinking process while the flight crew is trying to understand a situation.