LOL Dunno but am giving it a go though!
I'm not convinced that it's possible, the change in position of object 1 needs to be passed to object 2 in 'real time' OR the 2nd object needs to poll the values at a fixed time interval to check if a moves been made and then add the x, y difference to it's position.
A problem might occur when an object gets to the slides boundary and moves away out of site.
The actual 'logic' of the method is very simple but implementing it in a general and easily reusable way avoiding custom js modules might not be.