In regards to the Darkhound attack, Mat WOULD have died if Rand had not balefired the darkhound. He had not died yet, but he would have. He was still alive and mostly well by the time Rand did that. If you are talking about his hanging, I think he was near death but still able to be resuscitated, just like Rand did. Death by being hit by lightening is more final
Okay, so the official story is that Mat's bond with the horn was broken by his second death in tFoH when he was blasted by Rahvhin. But Mat died a first time when he was in Rhuidean and slobbered on by those Darkhounds if Moiraine is to be believed. Shouldn't that have severed it first?
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