The original practice, from what I understand, was that kohanim would bless the congregation every day during the amida of shacharis (and of musaf and n'ila when they were said, and of mincha on a ...
An Ashenazi kohain lives outside Israel. When it is not Yom Tov, can he bless the people in a Sefardi shul?
I am a kohain living outside Israel where the Ashenazi custom is that we only bless the people (duchan) on Yomim Tovim. Where I live, there are Sefardi shuls where the kohanim duchan on Shabbos and ...