サザエに金平糖
also: さざえにこんぺいとう
Meanings
1
two people arguing without listening to each other
Idiomatic expression describing a situation where two people are so busy asserting their own opinions that neither allows the other to speak or be heard. Often used for stubborn, unproductive arguments.
Their argument is like two people talking past each other, completely not meshing.
The meeting turned into a situation where everyone was just arguing without listening, and nothing was decided.