Screw you, even if I was sitting right next to you, you have no right to expect a response to your query in a minute. I will get to you when it's the appropriate moment in my workflow, otherwise I'm just running around like a headless chicken all day getting nothing done.
Working time is headphones on time. You do not distract me when my headphones are on.
We are not doctors in an operating room, you can wait 20 minutes. Hell, if I let you wait 20 minutes there's a 90% chance you'll solve the problem without me.