Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Cryons reveal Cyberman Earth destruction scheme
S22E2
·
Attack of the Cybermen Part 2
To
Doctor forges uneasy Cryon alliance
S22E2
·
Attack of the Cybermen Part 2
Why These Connect
The narrative assertion
"Peri’s inquiry upon rescue about Lytton’s true allegiance to the Cryons leads her to align with the Cryons and the Doctor, enabling her later assistance in the TARDIS and her support of the Doctor’s decision to rescue Lytton."
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.