Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor tasks Jo with volcanic investigation
S9E21
·
The Time Monster Part 1
To
Doctor connects Thera to Atlantis threat
S9E21
·
The Time Monster Part 1
Why These Connect
The narrative assertion
"Jo’s discovery of eruptions in the Thera group islands directly leads the Doctor to connect them to Atlantis and the Master’s involvement, escalating the stakes and motivating the Doctor to contact UNIT."
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.