Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Code Zero: The Station Shatters
S1E3
·
Happy Valley S01E03
To
The Siren’s Lament: A Race Against Grief and Guilt
S1E3
·
Happy Valley S01E03
Why These Connect
The narrative assertion
"The code zero emergency call interrupts the lighthearted mood at the station and Catherine's plans with Shafiq and Twiggy. That sets Catherine scrambling to the scene, which shifts the story from the station to the crime scene."
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.