Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"The Doctor's use of the metal snake to destroy a Dalek in the tunnels (a moment of ingenuity and crisis management) directly escalates the Daleks' aggression, as evidenced by the subsequent order in the parrinium mine to increase Exxilon workforce under threat of extermination. The Daleks' response reveals their growing ruthlessness, foreshadowed by the Doctor's earlier tactical victory."
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.