I need to present to a large group of people and need to connect my iPhone to a projector and a separate audio source. With the iPhone 7, how can I do this? With my other older iPhones I was able to use the VGA or HDMI lightning adapter for video and just plug-in at 3.5 mm cable to the headphone jack. Does the lightning port on the digital AV adapter or work with the lightning to 3.5 mm headphone adapter for the iPhone 7? What are my options here?