Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor slips free as Zygons misread signals
S13E3
·
Terror of the Zygons Part 3
To
Team reunites in Scotland to face the alien threat
S13E3
·
Terror of the Zygons Part 3
Why These Connect
The narrative assertion
"The Doctor's recovery of the control device from the heather and safety after evading the Skarasen lead directly to his reunion with the Brigadier and Sarah, confirming his safety and enabling their joint investigation."
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.