we spend teh first 2 years of their life teaching them to walk and talk adn teh next 18 telling them to sit down and shut up.
my 8YO is exactly teh same.
so i tell him time and place boy for chit chat. if we are watching a show talk during adds only. if im on teh computer, and dont reply its becaus eim concentrating adn will reply when fre. if i am talking to someone i just raise my finger to mouth then when finished i said now what was it you wanted to tell me,. i am free and can give you my full attention.

and we also made quiet time where there is nothing on in the house no tv no computer we all sit down draw read but nothing is said except praise.