Another silly question from me.

In the case of carriers that have PTV’s in the seat backs in front and the controlers for the passenger in the seat behind the one that has the PTV in it…..how are they connected?

Are the conrollers connected to the PTV in front through cables under the floor and as such, all the rows of seats have lots of cables connecting them. Or, is it wireless?

It is all wired mainly for reliability reasons. Yes wireless would make it easier but that would result in too much data flying about your heads. Wired is a simple case of plugged in / out, less can go wrong.

If it is digital there is more computer processing needed. If it is analogue then its just driven from the main player so just a lead for audio and sound is needed.

Digital need a thicker data cable in order to work as you have more options such as being able to select options.