MetroTech Service HVAC interview questions

Phone screen followed by in person interview at Baltimore location, detailed questions about technical knowledge and working with others and I thought it did well but never heard back, which I didn't like.

They put me though a 3 part interview process, with each interview lasting for about an hour. Interview 1: Awesome interview with a very nice person who had poignant questions Interview 2: Again, an exec level person who was nice and we had a fantastic conversation (so I thought) Interview 3: For some reason the exec wanted me to speak to one of their clients via Zoom. It's no big deal, I've done a ton of Zoom meetings. Problem was, I literally have a new MacBook Pro and wanted to test the camera feature about 15 minutes before the interview. Test: Successful! However, nobody bothered to tell me that my camera feature was still on the "mute" mode until literally the last 5 minutes of our hour-long meeting. It was embarrassing. Why didn't someone tell me at the start that my camera wasn't turned on? It happens to everyone at some point. I should also mention that I was suffering from food poising the day prior.. so I was probably not on my A-Game but still. I didn't deserve to be completely ghosted but the company,