Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Skagra reveals the prison door will open
S17E25
·
Shada Part 5
To
Skagra unleashes the empty Salyavin Cell
S17E25
·
Shada Part 5
Why These Connect
The narrative assertion
"Skagra's revelation in the TARDIS about opening the door to Shada directly results in the Doctor's attempt to stop him, as the Doctor realizes the catastrophic implications of Salyavin's release."
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.