Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor resists the Key’s dark lure
S16E26
·
The Armageddon Factor Part 6
To
Doctor disperses the Key and restores Astra
S16E26
·
The Armageddon Factor Part 6
Why These Connect
The narrative assertion
"The Doctor's dispersal of the Key components restores Astra to her human form, resolving her transformation arc and freeing her from the Key's power."
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.