Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor chases Peri into time stream
S21E24
·
The Twin Dilemma Part 2
To
Doctor strands Peri in desperate escape bid
S21E24
·
The Twin Dilemma Part 2
Why These Connect
The narrative assertion
"The Doctor's explanation of sending Peri back in time through the modulator directly results in her being sent back, with the success confirmed in the next beat, completing the escape plan's first phase."
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.