Training Queue - Sort By Training Time

What I would like to see is what skills depend on each other. Say I’m training for a ship but it has prereqs I don’t have. Spaceship Command V for example. I have all the skills in queue. But there is NO visual clue those skills are tied together. I would like to see a line drawn between the skills so I don’t accidentally remove or try to move those skills.

Spaceship Command V ----
Drone durability V     |
Ship V              ----
Coffeemaking V