(Still catching up!) Sechel Hayashar wrote: “R Boruch Oberlander (a shliach and respected dayan and posek in Hungary)…”
You’re kidding, right? I don’t mean anything bad about Rabbi Oberlander – I met him once and he seemed a truly special person – but your kidding that the fact he is a “respected dayan and posek in Hungary” carries any weight at all. How many shomrei Shabbos are there in Hungary today?
Or did you perhaps mean that he was a respected dayan and posek there before the WW2?