This is one of those things where there is huge cultural variation, but everyone subconsciously assumes their culture's point on the continuum is the "correct" one and gives advice based on that.
Some cultures lean towards people being expected to take the stage in a conversation and interruption is a valid and accepted way of communicating "I have something of value now". Other lean towards people being expected to give the stage and silence is a valid and accepted way of communicating "Do you have something of value now?"
Either style is fine, but you gotta read the room and adjust your style to fit the other people in your conversation.
Some cultures lean towards people being expected to take the stage in a conversation and interruption is a valid and accepted way of communicating "I have something of value now". Other lean towards people being expected to give the stage and silence is a valid and accepted way of communicating "Do you have something of value now?"
Either style is fine, but you gotta read the room and adjust your style to fit the other people in your conversation.