Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"Chen's delusional belief in his alliance with the Daleks in Episode 20 directly leads to his betrayal by the Daleks in Episode 21, which in turn allows the Doctor to act."
inferred by llm_cross_episode_character
Why This Matters Across Episodes
The longer arc this connection carries
Chen's false sense of security and paranoia in Episode 20 feeds into the Daleks' sudden betrayal in Episode 21, creating the chaos that allows the Doctor to emerge and activate the time destructor.
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.