Speaker overwhelmed in monumental kerfuffle (6)

I believe the answer is:

talker

I'm a little stuck... Click here to teach me more about this clue!

'speaker' is the definition.
(I know that speaker can be written as talker)

'in monumental kerfuffle' is the wordplay.
'in' indicates the answer is hidden within the clue.
'TALKER' is hidden within 'monumental kerfuffle'.

'overwhelmed' is the link.
This may not be correct. It may be part of another bit of the clue.

Can you help me to learn more?

(Other definitions for talker that I've seen before include "Rat" , "conversationalist?" , "Speaker" .)

I've seen this clue in The Irish Times.

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