So very often finding the output of a component to attach to another new one can be really quite a far reach. And sometimes there are other components attached to the same one nearby.
So instead of having to zoom out and select the output of the desired component, it would be great if we could select the input of another component that is also connected to the desired component and have the connector automatically link to the desired component.
So from the attachement exemples, instead of having to select the output of element A and drag it to the input of element C. One can select and drag the input of element B onto the input of element C with a shortcut key, and the element A will connect to element C.
I hope this makes sense.