My experience is pilots are completely and profoundly deaf to what is going on around them on the radio unless specifically addressed by callsign, and sometimes even then.
I also notice when I am flying if concentrating on intercepting a heading, figgering a heading, intercepting a level, interpreting what the instructor means when he says "Something Bad Is About To Happen", etc. etc. that I can be profoundly deaf also.
"Aircraft on final runway 27 ArgleBargle, ABC, your nosewheel is up." Will punch through the above better than, "Tower, TOWER, ABC here, that aeroplane has its nosewheel up."