Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor reveals Skagra's escalating threat to Chronotis
S17E25
·
Shada Part 5
To
Doctor frantically warns of Skagra’s Shada plan
S17E25
·
Shada Part 5
Why These Connect
The narrative assertion
"The Doctor revealing that Skagra has Romana, the TARDIS, and the Book of Shada directly prompts Chronotis to mention Shada and Salyavin, as the Doctor recalls Shada's infamous prisoner."
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.