In one sense, all our synapses are already connected in that they--and we--must follow all the known rules of mass/energy so far discoved.
If you mean could we--our "mind"--be connected in a larger extra-dimensional construct--for example, that "unexplainable hierarchy of scale" mentioned in the article--this "mind" connection making us "one" is entirely feasible given these latest details of our extra-dimensional quest.
Like a child watching the bubbles in the soda bottle seemingly emerging from nowhere, the scientist sees our universe emerge from "nowhere" into being. The discovery of extra dimensions may create a new concept of that "nowhere"--and reveal the source, not only of the universe, but also some inner secrets of the human mind--and the stunning majesty of the Divine Force behind it all.