Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"The Graff's pursuit of the Doctor into the Catacombs (E3) leads directly to the Captain's decision to fire the cannon into the tunnels in E4, as a countermeasure."
inferred by llm_cross_episode_character
Why This Matters Across Episodes
The longer arc this connection carries
Ron's recognition of the Catacombs' lethality in E3 (as conveyed in his dialogue) directly informs his violent decision to fire the cannon in E4, treating the caves as a deathtrap to be collapsed.
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.