iPad -> USB-C Output -> USB-C connector of Apple Connector with USB-A Input, USB-C Power Input, HDMI Output -> HDMI Cable from Apple Connector to HDMI Video Capture HDMI Input.
Apple Connector
HDMI Video Capture
HDMI Video Capture -> HDMI Output to HDMI Cable -> Projector HDMI Input.
USB-A Input to USB-A Cable -> USB-A Power Plug to Power Socket (Mains).
HDMI Video Capture -> RJ audio Jack Output -> UBL Portable Bluetooth Speaker with RJ audio Jack cable.