Lets be realistic here.
The Huey was possibly the loudest helicopter ever made by man.
We could fly close by in a OH-6 Loach, all the doors off, helmet on, and still hear the Huey over all the wind noise and other noise my own ride was making.
It's so noisy in a Huey the only practical way to communicate inside it by the helmet com., and even when we were talking to anyone flying in a Huey , that noise the Huey made let you know immediately you were talking to someone flying in a Huey.
So do you really think they would add extra chatter to the only way they had to communicate ?
Only in the movies.