Talk with the other side (8)
I believe the answer is:
converse
I believe this clue is a double definition.
'talk' is the first definition.
(I know that converse is a more specific form of the action talk)
'other side' is the second definition.
(thesaurus)
'with the' is the link.
(Other definitions for converse that I've seen before include "Quite the opposite!" , "express thoughts and ideas?" , "Communicate with" , "take part in discussion" , "Have a chat, being contrary" .)