I remember thinking that if you assume like the Brisker Rav and that it is actually a Kiyum of an Asei D’Oraisa that you should be allowed to eat even before Davening on Erev Yom Kippur because the Asei could be Docheh the Lo Sa’asei of Lo Soch’lu Al Hadam. I never actually do it though.
Somebody asked me during the ????? in Yeshiva yesterday a similar Shaila – If the only food you can get hold of is a ????? or ?????, would you be allowed to eat it using the principle of ??? ???? ?? ???????
Yatay: Rashi there is clearly pointing out that the Din is to ahve a special Seduah (although I think he appears to be slightly Soseir himself somewhere else). And Achilas Matzah (Rosh Hashana 28b at the very top, I believe) would seem to disprove you, but see the Rishonim and Poskim on that Gemara and Sugya and I would assume the Din is similar here.
The ??”? is not ????, and i tayned the same as you to my ?????? when he said this, but the Gaon is ????? the ??”?. As far as i know, it is a ??????.
Can you please explain your ???? from ????? ????