Yes Sure! So the closed Airpods are connecting to one of the nearby device signed in to the same apple id.
How I am noticing?
User journey-> I try to pick up a phone call on my iPhone and it automatically gets connected to my closed up airpods lying nearby. I have to manually switch to speaker or iphone speaker to transfer the audio from airpod to my iphone. Sometimes airpods gets disconnected automatically in 1-2 secs o picking up the call. But this is random.
Another user journey -> Mac audio suddenly gets cut off from its inbuilt speaker and gets transferred to airpods. I have to manually switch sound output.
Another user journey -> Locked Mac suddenly gets connected to airpods, identified by screen gets lights up randomly. It gets disconnected automatically too sometimes.
All these observations are while airpods are closed in their case and has been that way for quite some time.
Agree with another reply here on the thread, its draining Airpods battery too (~15-20% case battery decrease in 8 hours)