Crazy Eddie: I usually leave it a few days before posting the answers, and that will be in a separate thread with a "Blue Clicky" here to take you to it. It will also be the same 'Answer' thread I have used before, and so will cross-reference to earlier quizzes.
If No 12 is confusing your connection, then think what else it can be an abbreviation for.
I'm sure you have the right line, as you do refer to it as an orderly connection! (Groan)