Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor fails to stop black light surge
S23E4
·
The Mysterious Planet Part 4
To
Black light explosion erases Drathro
S23E4
·
The Mysterious Planet Part 4
Why These Connect
The narrative assertion
"The Doctor's partial success in engaging only two of the three shutdown levers (the third remaining stuck) directly causes the black light system's violent explosion. Despite the Doctor's best efforts, the catastrophic failure of the system is inevitable, forcing him to flee as Drathro is destroyed."
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.