Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Leela urges Rodan to defy Gallifrey law
S15E22
·
The Invasion of Time Part 2
To
Barrier fails as invasion begins
S15E22
·
The Invasion of Time Part 2
Why These Connect
The narrative assertion
"Rodan’s revelation about the incoming probative fleet enables Leela’s urgent appeal, which in turn sets up her eventual alliance with him. But more critically, this intelligence becomes the crucial data point that the Vardans exploit — leading directly to the red alert and barrier failure when sabotaged."
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.