Certain links might come thus unrehearsed? (3-3-4)
I believe the answer is:
off-the-cuff
'unrehearsed?' is the definition.
(synonyms)
'certain links might come thus' is the wordplay.
I cannot quite see how this works, but
'certain' could be 'the' (definite article - refers to a certain object) and 'the' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for off-the-cuff that I've seen before include "Impromptu" , "Unofficially - improvised" , "Spontaneous" , "Improvised - extempore" .)