Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor reveals Morbius may still live
S13E19
·
The Brain of Morbius Part 3
To
Doctor challenges Sisterhood over Elixir
S13E19
·
The Brain of Morbius Part 3
Why These Connect
The narrative assertion
"The Doctor's revelation that Morbius may still be alive (a former Time Lord war criminal) elevates the stakes and forces the Sisterhood to confront the possibility that their ancient enemy has returned."
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.