Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Colonel seals fortress against Yeti threat
S5E25
·
The Web of Fear Part 3
To
Doctor accuses traitor in their midst
S5E25
·
The Web of Fear Part 3
Why These Connect
The narrative assertion
"The Doctor discovering the explosives are compromised results in the Doctor asserting the Yeti have sabotaged their plan and the Colonel's insistence on verifying the situation himself."
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.