just a post to avoid explaining your previous post.
Sorry, I didn’t see your question. (It may have been approved after subsequent posts.)
Is Vein and Vienna not the same place? Which part of Brooklyn are you referring to?
The Vienner (?????) Kehilla, Kehal Adas Yereim Vien (??? ??? ????? ?????) originated in Vienna, Austria. Hence their name “Vien”. They are now headquartered in Boro Park, Brooklyn.
Where is Chasan Sofer/Mattersdorf? Country? city?
Yeshiva Ch’san Sofer, led by the Rosh Yeshiva the Mattersdorfer Rov, Rav Simcha Bunim Ehrenfeld shlita, who is on the Moetzes Gedolei HaTorah of the Agudas Yisroel of America, is also in Boro Park, Brooklyn. His father, Rav Shmuel Ehrenfeld zt’l, the previous Mattersdorfer Rov and Rosh Yeshiva, founded Kiryas Mattersdorf in Yerushalayim.