Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Virus spreads as Marius prepares for betrayal
S15E7
·
The Invisible Enemy Part 3
To
Doctor defies Swarm's Nucleus in his mind
S15E7
·
The Invisible Enemy Part 3
Why These Connect
The narrative assertion
"The Doctor's leg jerking in the Isolation Ward (beat_9e710858e4ae72c2) is an external manifestation of the Nucleus's presence and actions inside the brain, which the miniaturized Doctor and Leela eventually encounter directly (beat_b0a947f5cf8d8c2b). The leg's involuntary movement signals the external ramifications of the internal conflict."
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.