I have seen multiple times in the node editor that you can split a noodle/pipe, with a socket in the middle of what would otherwise be a normal pipe. I have found no documentation or any other information on this, but I know it is possible, such as seen from the image from this question:
What is the keyboard shortcut or method of performing this split?
(Bonus: Is there a specific, official name for the noodles/pipes?)
Thank you!