Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"The sewer-based confrontation with Cybermen (Part 6) directly causes the confirmed Cyberman overrun in London by the start of Part 7, establishing the escalated threat environment that shapes the episode."
inferred by llm_cross_episode_character
Why This Matters Across Episodes
The longer arc this connection carries
The failed UNIT ambush in the sewers (Part 6) allows the Cybermen to spread uncontrollably. This consequence is explicitly confirmed by Turner in Part 7 when he reports UNIT's collapse and the streets being 'packed with Cybermen,' demonstrating how an intra-episode failure (UNIT's inability to contain the Cybermen) triggers the cross-episode escalation into invasion chaos.
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.