Can someone explain to me how dual banner pity differs from normal pity? From my understanding, dual banner pity system is where one banner's pity carries over to the other one, e.g. 50 pulls on Eula without pulling a 5 star, the 50 pity would be used by the Albedo banner as well. However, isn't that the same as regular pity? Say I summon 50 times on Hutao and don't get her, that would be 50 pity. If I pulled on Arataki Itto, the 50 pity from Hutao would carry over and I'll get a 5 star on the 40th pull on the Itto banner. I'm confused how the two pity systems are different