[Avodah] Kevius Seudah on PHBK for Sukkah

[kennethgmiller at juno.com]

Regarding Pas Habaah B'Kisnin (PHBK) in the sukkah, Mishneh Brurah 639:16 says: "... If he was not kovea seudah, but merely ate more than a kebeitzah, there are varying opinions among the acharonim whether he needs to say Leshev Basukkah... In order to avoid this safek bracha l'vatalah, he should see to it that he doesn't leave immediately after eating, but rather sit/stay [lasheves] there for some time [zman mah], and when he says the Leshev Basukkah, he should have in mind to cover both the eating and the sitting [yeshiva] after it."

It seems clear to me that the case where this safek exists, according to the MB, is where he DOES exit the sukkah immediately after eating the PHBK. Phrased differently, it seems that if one wants to grab a quick snack of a kebaytza-plus of PHBK, then on the one hand it must be eaten in the sukkah, but on the other hand there's a safek on whether this is enough of a keviyus to justify the bracha.

I am bothered by this apparent chiluk being made between PHBK and Pas Gamur. The shiur for one is "more than a kebaytza of pas", and the shiur for the other is "more than a kebaytza of pas". Why distinguish between different types of pas?

So here's my question: Suppose someone would want to grab a quick sandwich made of more than a kebaytza of pas, and some sort of filling. His plan is to wash netilas yadayim in the house, enter the sukkah, say the proper bracho(s), eat the sandwich, say birkas hamazon, and leave immediately. It seems to me that there is no more kevius here than in the MB's case. Do any poskim discuss whether or not to say Leshev Basukkah in such a case?

Akiva Miller