In the Shader Editor of Blender, holding down the Shift key while right-clicking and dragging on a link between nodes combines all of the links that cross the selection area into a single, curved link.
This can help to reduce clutter in your shader network and make it easier to see the relationships between nodes. By combining links in this way, you can simplify your shader network and make it easier to understand.
To use this feature, simply hold down the Shift key while right-clicking and dragging over the links you want to combine. The links will become curved and grouped together, reducing clutter in your shader network.

So give this quick tip a try the next time you’re working in the Shader Editor of Blender and see how it can help to simplify and improve your shader networks!