Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor falters as chaos consumes the TARDIS
S19E1
·
Castrovalva Part 1
To
Doctor stumbles beyond Zero Room threshold
S19E1
·
Castrovalva Part 1
Why These Connect
The narrative assertion
"The Doctor’s unstable regeneration makes him unable to negotiate the TARDIS without the Zero Room. His memory fragment of the Zero Room’s location leads him to move toward it, but his continued instability causes him to collapse when attempting to leave—directly prompting Tegan’s protective intervention."
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.