I was wondering if it’s possible from two different nodes right in the middle of them to make a connection with a third node ( you can see the red line what I mean.
As you are parent and you have a kid as it shown on like a family tree.
But in this format with the nodes
Just create your new note and link it to [[Nyx]] and [[Eros]]
Doing that, you would end up with a triangle as Nyx and Eros will still have a direct link to each other. To remove that, just remove the wiki-link between those two notes.
To my knowledge, you can’t just click on the graph view and create a new note like you would in mind-mapping software.