It’s a tricky thing when characters speak together. It almost never seems spontaneous.
No character ever speaks with another in a play, then looks at the other in wonder, the way we do when this happens in life. Onstage, choral speaking is an accepted convention, I suppose.
I have no objection to it. In fact I’d probably like more of it. It’s satisfying to hear people speak together.
Just once, though, I’d like to see two characters speak at once, then look at each other and do a “Jinx, buy me a coke” gesture.