I am sure this kind of feature will be added sooner or later. I changed the titled and made a hint that people should just watch the video. This a obvious intuitively fitting feature, I think a must have, can be also worked a bit more this is just a basic idea of it for the beginning.
For example after a click on the search result with control/shift hold, could leave the highlighting of the nodes/connections “open”. Or and if you click with a same short cut set highlight for a node when you click it on the graph view.