Doctor one to talk interminably (5)

I believe the answer is:

drone

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'talk interminably' is the definition.
'drone' can be an answer for 'talk' (droning is a kind of talking). I'm unsure of the 'interminably' bit.

'doctor one' is the wordplay.
'doctor' becomes 'Dr' (abbreviation).
'dr'+'one'='DRONE'

'to' acts as a link.

Can you help me to learn more?

(Other definitions for drone that I've seen before include "He buzzes, but not with energy!" , "Bertie Wooster, say" , "Talk boringly; a parasite" , "Bee, speak tediously" , "small creature" .)

I've seen this clue in The Sun.

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