Reply To: Hilchos Shmiras Haloshon

“How do you know someone’s not the Gadol Hador because you got a bracha from him?”

That was kind of meant as a joke. Also, I’m just on a high because I just got a bracha from Rav Chaim Kanievsky, and felt a need to mention that. But actually, it is proof because Joseph was in New York on Shabbos so he couldn’t have possible have been in Bnei Brak this morning.