Narrative Connection
How these two moments in the story relate
Why These Connect
The narrative assertion
"The Yeti's presence in Covent Garden in Part 4 leads to the Great Intelligence's direct confrontation with the Doctor in Part 6 through the pyramid machine and control helmet."
inferred by llm_cross_episode_character
Why This Matters Across Episodes
The longer arc this connection carries
Blake's sighting of the Yeti in Part 4 foreshadows the Yeti's role in trapping the Doctor in Part 6. The expansion of the Intelligence's control from ambushes to systemic conquest (pyramid machine) is a direct escalation from Part 4.
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.