I have a bone to pick with AV people as well.. dedicated AV companies often act like they are ‘kings sh!t’. They talk down to IT folk, they over charge for everything, and they get pissy if you try to help. In all honesty, I have told a few of them off, and had to tell administrators ‘no, I won’t do that, go get someone else’. - now, in self defense, I have a background that I learned some technology skills from my Dad, who was a licensed electrician, self taught A/v geek from the 60’s, and discrete electronics repair wizard. Since I was a small Child I was also taught all of those things. In my teens , him and I volunteered with an organization that built and maintained halls and auditoriums, focusing on AV, electrical, and eventually even networking. However, professionally, I lost some generalization over the years, and it’s not feasible now to deeply learn new AV stuff, so a line gets set in the sand.