What the heck? First of all, it’s a connection, which is a noun, not an adjective. Secondly, it’s redundant: a connection IS a link, for crying out loud! If it were correct, then what would be its opposite, an “unconnectional link”? A “non-connectional link”? A “connectional non-link”? Thirdly, why do so many people try to make themselves seem more intelligent and/or more articulate than they really are by practically raping the English language? Grrrrrrrrr.