Callback
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor resists mental parasite with desperate retreat
S15E6
·
The Invisible Enemy Part 2
To
Doctor exposed as virus carrier saves TARDIS
S15E6
·
The Invisible Enemy Part 2
Why These Connect
The narrative assertion
"Leela's question about her immunity at Titan Base is explicitly answered in the Isolation Ward, where the Doctor explains that her lack of intellectual over-reliance (or instinctual nature) shields her. The earlier mystery directly seeds the later thematic exposition."
About Callback Connections
B explicitly references A. A later moment deliberately echoes an earlier one, creating a sense of narrative completeness and rewarding memory.