Ok I couldn't find it but I swear there was a WoB on how sazed is having trouble with both the shards but somewhere (I think in the dawnchant or something) it had a picture of one and then 4 groups of 4 which were referring to the shards of adonalsium. So in the WoB the person asked if 4 shards combined would they make a super shard and not have the same problems as sazed.
If someone finds this WoB I would like to see and have discussion on it. And please correct anything I said here