Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor defies the test to join Zoe
S6E20
·
The Krotons Part 2
To
Doctor and Zoe forced into Kroton domain
S6E20
·
The Krotons Part 2
Why These Connect
The narrative assertion
"The Doctor's completion of the test leading to his selection as a companion, followed by their decision to enter the Dynatrope creates direct cause and effect."
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.