Possible Clues:

• Slovenian actor surprisingly chatty
• Chatty fellow countryman digesting a lot of poetry
• A novelist can or might produce another word for 'relaxed'
• Like chatting in company with citizen about poetry, mostly
• Slovenian and Croat reunited, in a manner of speaking
• When playing, actor Niven also relaxed
• Fond of a chat, contrive a salon somehow