Mary, as noted elsewhere, engineering is distinct from design. IMHO, EDIG engineered ('designed') the electronic circuitry and provided software for the IFE device. Digitalway then would (again IMHO) have worked with EDIG, APS, and quite possibly the end user to design the outward appearances of the unit as well as internal considerations affecting the manufacturing process, such as selecting the most cost-efficient components and configurations that would meet the ultimate specifications of the device.
Always tell the truth. Then you'll never have to remember what you said the last time.