FindMy appears to be a bit buggy, (unless 15.0.2 update resolves problems.) Just this morning, I was driving to work, wearing my iPod Pro's, with my iPhone (12 Pro Max) mounted to my dashboard. While driving, Siri suddenly announced, through my iPod Pro's, that I had left my iPod Pro's behind, along the highway. Later, when I arrived at my office, I received a notice that I had left my home keys behind.(Air tag attached). The keys were in my pocket, about 6" away from my phone, in a belt holster.