Kibitzing
verb
To make small talk or idle chatter.
“Louise and I used to head down to the coffee shop and just sit for hours and kibitz.”
To give unsolicited or unwanted advice or make unhelpful or idle comments, especially to someone playing a game.
“Quit kibitzing! You're giving away my hand!”
To watch a card or board game.
noun
The action of the verb to kibitz.