Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
TARDIS Buried Under Collapsing Bridge
S2E4
·
World's End
To
Barbara discovers death and Tyler’s threat
S2E4
·
World's End
Why These Connect
The narrative assertion
"The Doctor and Ian's separation from Barbara and Susan results in Barbara's rescue by Tyler after gunfire erupts, leading her to believe Susan is in danger."
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.