Foreshadowing
strong strength
Narrative Connection
How these two moments in the story relate
From
The Doctor unmasks the conjured illusion
S19E23
·
Time Flight Part 1
To
Nyssa exposes the rotting corpse illusion
S19E23
·
Time Flight Part 1
Why These Connect
The narrative assertion
"The Doctor's identification of the illusion phenomena immediately precedes Nyssa's horrified scream upon seeing decaying corpses, revealing the deceptive nature of their new environment."
About Foreshadowing Connections
A hints at B. The first event plants narrative seeds that pay off later. These connections reward attentive viewers with a sense of inevitability on rewatch.