As I said, a single LNB can only be orientated one way, vertically ot horizontally, which means that, at any one time, only half the transponers/transmitters will be accessible. If you want each box to be able to be able to access all the channels independently you need a twin LNB. No adaptor can get around that.
All the Sky eye allows you to do is extend the picture from one box to a second TV and control the box remotely. Both TVs receive the same channel from the same box.