How to draw a line between two objects in 2D?

Question

2D

On the Internet, it is suggested to use Line Renderer, but it is not suitable, because. there are many objects, and it draws a line between N-points, not objects.
You need to draw something like a path / links between elements inside the Scroll View.
Unity itself has the ability to display some (completely incomprehensible) relationships between buttons, but these relationships are visible only in the IDE.
I would like to draw something similar.