Impossible to set-up broadcast opportunity (2,6)
I believe the answer is:
no chance
'impossible' is the definition.
(thesaurus)
'set-up broadcast opportunity' is the wordplay.
I cannot really see how this works, but
'opportunity' could be 'chance' ('chance' can be a synonym of 'opportunity') and 'chance' is found in the answer.
The remaining letters 'no' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'to' is the link.
Can you help me to learn more?
(Other definitions for no chance that I've seen before include "That's definitely out" , "Most unlikely!" , "pessimistic forecast" , "That will not happen/succeed" , "Monopoly could be badly affected by this" .)