Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"The Doctor's attempt to communicate with the Creature by etching and recognizing the pentagonal symbol directly facilitates his understanding of the Creature's cooperative nature and leads to his miraculous escape through the shell. This moment of communication is pivotal to the plot as it shifts the Doctor from being trapped to actively opposing Adrasta's plans."
About Causal Connections
A directly causes B. The first event sets forces in motion that produce the second. These are the load-bearing connections of plot--remove one and the story structure collapses.