Is it Dalyell appearing in Just a Minute? (3)

I believe the answer is:

tam

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'is it dalyell' is the definition.
I can't judge whether this defines the answer.

'in just a minute?' is the wordplay.
'in' says the answer is hidden in the clue.
'TAM' can be found hidden inside 'just a minute'.

'appearing' acts as a link.

Can you help me to learn more?

(Other definitions for tam that I've seen before include "Turn over the mat for a cap" , "Scots cap" , "'Woollen cap of Scottish origin, in short (3)'" , "Index rating for TV watching" , "Headgear" .)

I've seen this clue in The Times.

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