Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor leaves while Master lingers
S14E12
·
The Deadly Assassin Part 4
To
Time Lord farewell amid rising dread
S14E12
·
The Deadly Assassin Part 4
Why These Connect
The narrative assertion
"Spandrell’s observation of ‘suspicious movement by the long case clock’ immediately precedes the Master’s face appearing in the clock face. This links the aftermath of the catastrophe to the lingering threat, confirming that the Doctor’s departure does not equate to safety."
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.