Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"Ian and Barbara's discovery of the insecticide formula in Episode 2 directly leads to the Doctor's urgent analysis of DN6's lethal potential in Episode 3, including the revelation of its 'everlasting' toxicity."
inferred by llm_cross_episode_character
Why This Matters Across Episodes
The longer arc this connection carries
This connection is pivotal: the companions' scientific deduction of the insecticide's lethality in Episode 2 is the foundation for the Doctor's critical analysis in Episode 3, escalating the stakes from mere threat to systemic danger.
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.