Originally Posted by Polux
The only thing that bothered me every time I saw the movie (way too many) since the first time, is the avengers being in "radio communication" during the whole movie, but non of'em wears an earpiece at any point (I paid real close attention, to make sure...)
Ironmans is no real question. He probably just hacked into their radio frequency anyway. Hulk didnt speak to anyone via radio comm. I dont remember if Thor did.
But the rest, Cap, Hawkeye, Widow it could very well have been attached to their suits. Like movie set mics often are anyway.