Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor reveals regenerative limits to Tegan
S20E12
·
Mawdryn Undead Part 4
To
Nyssa exposes Mawdryn’s betrayal to the crew
S20E12
·
Mawdryn Undead Part 4
Why These Connect
The narrative assertion
"Tegan's vehement opposition to the Doctor sacrificing regenerations (Act 1) directly informs her confrontation with Mawdryn about infecting her and Nyssa (Act 3), revealing her moral consistency and growing desperation."
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.