OK, here is that test. The system behaved as should be expected. The audio stopped as soon as the lid was closed. I left it that way for 19 minutes.
I opened the lid and tapped the spacebar and the system woke up and starting playing again. There is no mention of any Audio Service or DHCP actions happening. You are on Win 11 and I am on 10. That plus the different processor may make a difference but I don't really think it would. Something strange is happening on that system.