Well, that's people repeating the line for confirmation in a scenario where communications weren't very reliable and the information was extraordinary.
That's close to the way the conversation would happen in real life.
Sure! I would humbly suggest that we don't go to movies to see -real- real life situations re-presented back to us.
I mean, unless you have two comedic geniuses who can really sell yelling down the stairs to ask the partner what they want for dinner, getting met with "HUH???" inching a little closer, and having repeat this three times until you finally just go down and ask in a normal voice. In the right hands that could be comedy gold on screen.
But by in large, we don't consume media because it represents the banal reality of everyday life.
That does not mean some amount of banal reality is an infraction or something bad. It makes movie feel less artificial. The weird thing is when people are so used to artificial, that they reject banal reality as "overdone joke" rather then "scene where people talk normally move on".
That's close to the way the conversation would happen in real life.