Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor and Nyssa confirm alien intrusion
S19E13
·
The Visitation Part 1
To
Doctor and Nyssa assess threat together
S19E13
·
The Visitation Part 1
Why These Connect
The narrative assertion
"The Doctor's finding of missing weapons and gunpowder in the Servant's Hall (Act 2) is logically linked to Nyssa's discovery of an alien power pack nearby, confirming that aliens stole human armaments using their own technology."
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.