Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Weighing risky TARDIS repair options
S21E7
·
Frontios Part 1
To
Acid jar sparks TARDIS repair plan
S21E7
·
Frontios Part 1
Why These Connect
The narrative assertion
"Tegan's alarm about the jammed TARDIS door and the companions' discussion of alternatives (mu-field activator, acid jar) directly leads to Norna's suggestion to retrieve the acid jar from the sealed research room, driving the entire retrieval mission."
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.