This TV installation was a bit tricky because the customer wanted to have concealed cables but the wall behind it is constructed of plasterboard glued onto 2 thick sheets of plywood. The builders assured him there was enough cavity space behind it to fish out the cables but were not sure which way the wiring goes. After some testing and discussion with the builders we accepted the job, created access holes and mounted this TV successfully 👍Normally we wouldn’t overthink this too much but because the wall is wallpapered and no guarantee that we can fish out the cables creating channels in the wall was not an option because of the wallpaper and everything that comes afterwards to make it right.