Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor deduces antimatter entity hunts him
S10E1
·
The Three Doctors Part 1
To
Doctor reels as Bessie vanishes and beast closes in
S10E1
·
The Three Doctors Part 1
Why These Connect
The narrative assertion
"The Doctor's analysis that the entity used a beam to scan the Earth and is now targeting them specifically explains why Bessie's disappearance occurs later. The Doctor recognizes the entity's interest in him as the core threat."
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.