This is one of those cases where being a CDL probably gives you a special lens to see the conduct. From my layman’s perspective, wouldn’t a “but for” test be the easiest way to determine if the alcohol caused the death? To put it simply, but for the alcohol, would he have caused the crash? If yes, but for the crash, would the cop have been there to get hit? While I can understand a multiple step causation test being problematic in light of the precedents you cited above, it’s not like a cop attending a crash is an unlikely event for a drunk driver to consider. Does the probability of what the second hop is figure in at all?