I heard this from a Rabbi. Not a Gadol,just a pulpit Rabbi. He was explaining about talking in Davening and how to stop it.
Klopping on the table was not the solution.
He basically admitted that most people talk because they are bored and the words dont mean anything especially in a foreign language.The longer the davening and the more breaks , like between aliyot the more likely there is going to be talking.
He had suggested somewhat speeding up the davening and making it more interesting like more singing. Of course some here are going to say here what is more interesting that talking to hashem, but the reality is people dont nessasarily think that or at least act that way