Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Household under alien fire erupts in deadly revolt
S19E13
·
The Visitation Part 1
To
Doctor discovers alien artifacts in barn
S19E13
·
The Visitation Part 1
Why These Connect
The narrative assertion
"The green beam that injures Ralph in the Servant's Hall (Act 1) directly foreshadows the Doctor and Nyssa's later discovery of alien power packs in the hayloft of the Barn (Act 2). Both moments tie to the same alien weaponry and energy signatures."
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.