Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Jo leads escape through ventilation
S9E14
·
The Sea Devils Part 6
To
Jo escapes through ventilation shaft to roof
S9E14
·
The Sea Devils Part 6
Why These Connect
The narrative assertion
"Jo's suggestion of the ventilation shaft as a means of escape (beat_0957b456d6ba8e7c) directly leads to Hart lifting her into the shaft and her eventual escape to the roof (beat_2415b9cd764edd9c), setting up her crucial communication with the Doctor."
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.