I am demolishing the wall between two rooms, one with a two way controlled light, one with an ordinary one way switch. Is it possible to bring the two together so they both operate under the control of the two way switch. (SUPPLEMENTARY INFO I only have access to the switches as the rooms above have laminate/tile floors and I am not planning to renew the ceiling. There is just one point however where I can bring the existing switch cables, from the main two way and the one way, together and want to know if it will be possible to put in a junction box here and a new cable to the position of a new master switch)
Many Thanks
Many Thanks