As for the lack of reports of a meteor storm following an impact, that can be explained also. Maybe there wasn't a very prominent display, in spite of predictions. Or maybe it wasn't the impact that caused G. Bruno, but a smaller one that didn't produce so much debris. Or, just perhaps, there was a display, but nobody bothered to actually report it. This may seem strange, but it's plausible.
Obvious things go unreported fairly often.
Or, it could have been something else entirely, and neither explanation is correct. Sorry, I'm not going to get into any arguments along those lines. They all seem symetric. The Crab nebula went unreported. The asteroid impact of Nov l966 did not happen, as best as I can tell.