Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor and Jo tend Clark while racing the sea devil
S9E10
·
The Sea Devils Part 2
To
Doctor and Jo convert radio to weapon
S9E10
·
The Sea Devils Part 2
Why These Connect
The narrative assertion
"Tending to Clark's wounds leads to the Doctor learning about the damaged radio, which catalyzes his ingenious plan to convert a transistor radio into a transmitter—a critical turning point for the Doctor's agency in the story."
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.