Yeah, I expected these kinds of responses. A careful read would help you with your assumption about how the DEF was introduced as I was careful not to blame the guilty party. I also tried to make the question/request pretty clear. We're all on the same page about the fact that it should not be done. We're all in agreement that it's a stretch for insurance to cover every single possible scenario. What is being asked here is for circumstances where some insurance companies have covered this kind of thing and when they have not. Here it is again... "Any firsthand experience with how Geico, Progressive, or other carriers approach this would be helpful." If you don't have this kind of experience, you don't have to waste your time with a response.