Talk the talk? (8)
I believe the answer is:
dialogue
'the talk?' is the definition.
(dialogue is a kind of talk)
'talk' is the wordplay.
I cannot really see how this works, but
'talk' could be 'dialog' (dialog is a kind of talk) and 'dialog' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for dialogue that I've seen before include "Agile duo in conversation" , "Talks" , "Two-way conversation" , "Conversation between two people" , "The speech in a play" .)