Companies perform their R&D in a multitude of ways and 'Project Titan' was just a way of testing out technologies that would eventually filter down into their consumer electronics devices.

LiDAR is a prime example: iDevice ability to scan areas, objects and interiors is actually pretty incredible and yet its the one piece of tech the iPhone has that has yet to be copied by an Android manufacturer.

The iPad started out as a table and a projector. If the XR headset is coming then many of its technologies might have originated here, strapped to the roof of a car a decade ago.