Callback
medium strength
Narrative Connection
How these two moments in the story relate
From
Doctor and Romana reunite with St Cedds past
S17E21
·
Shada Part 1
To
Doctor confronts Chronotis over mysterious signal
S17E21
·
Shada Part 1
Why These Connect
The narrative assertion
"Wilkin's recognition of the Doctor from previous visits (in 1955, 1960, and 1964) and his mention of the Doctor's multiple incarnations callbacks to the Doctor's time-traveling nature, reinforcing his alien identity to the audience and setting up his trustworthiness."
About Callback Connections
B explicitly references A. A later moment deliberately echoes an earlier one, creating a sense of narrative completeness and rewarding memory.