Today Nisson 30th, is 247th Johrzeit of a very Choshuv Jekke:- The Korban Nesanel.
Yekke2:- No-one should wait 3 hours, because Yoreh Deah makes no mention of 3 hours. Only 2 options are mentioned in Yoreh Deah:- 1) 1 hour
2) 6 hours
Any other option, has no basis in the Shulchon Oruch!! Period!!