Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor warns Hart as Trenchard's treachery unfolds
S9E10
·
The Sea Devils Part 2
To
Master sighting ignites base security crisis
S9E10
·
The Sea Devils Part 2
Why These Connect
The narrative assertion
"The Doctor’s deduction of Trenchard’s complicity prompts Jo’s observation of the Master on the base, which triggers the security alert and forces Hart to confront the immediate threat—moving the plot from suspicion to direct confrontation."
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.