Causal
medium strength
Narrative Connection
How these two moments in the story relate
From
Brigadier sends Sarah and Harry to Forgill Castle
S13E4
·
Terror of the Zygons Part 4
To
Brigadier commands assault on quarry base
S13E4
·
Terror of the Zygons Part 4
Why These Connect
The narrative assertion
"Sarah’s suggestion to search Forgill Castle initiates a chain of intelligence gathering that ultimately leads to the Brigadier ordering movement to the quarry, reuniting with the Doctor after the spaceship’s destruction."
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.