I meant things like crops, defense, beds, generators, etc. Those things should always be kept in the original cells of a settlement. Well you can go outside the boundary, but I would not go too far.
There has been cases where people tried running power from Sanctuary to Red Rocket and did not end very well.
Had a friend decide run stuff from Hangman's Alley to Diamond City gate so he could build a better defense there. That did not end very well either.
If you want to build a concrete wall, bridge or whatever outside the boundaries it really should not have any effect as long as you aint like five miles away with it.
In some cases it might be better to just spawn an item with a console command and learn to rotate it with the x,y,z axis commands. Like if you wanted to add a chemistry workbench at Cambridge Red Rocket. Which of course ya can not do on an X Box, lol.