Sukkos: Searching for A Missing Halachah

[Richard]

Over the years we've had informal discussions re: the completeness of the Talmud and/or the Shulchan Aruch. Of course, not every contingency could possibly be foreseen but this one "Missing Halachah" has been on my mind for many years.

The case involves two cases of Halachah that often converge on Sukkos:

Principle #1
That of changing venues during the midst a S'udah. Which is address by the Classic Codes.

Principle #2
The concept of leaving the Sukkah to go inside the house, and sometimes vice versa. This is also explicit in the Codes

Convergence.
The cases addressed in the Codes re: #2 seem silent re: the impact of Principle #1

Here are 3 instances addressed by the Codes with regard to changing venue on Sukkos.

1. When the First Night of Sukkos has inclement weather we recite Kiddush and Hammotzi in the Sukkah before moving back to the house to complete our meal

2. Conversely, when the Second Night of Sukkos has inclement weather, we make Kiddush, Hammotzi, and eat inside, and then go into the Sukkah to eat a k'zayis of lechem.

3. During the Chag: when we eat inside the Sukkah and get interrupted EG by a sudden rain shower.

And so I asked -
Does anyone know of a popular Halachic Seifer that does address the case of shinnuy makom in the specific situations related to Hag Sukkos!

Answer from a Colleagu
It's in Kitzur S"A! Where I found several useful passages on point:

135:3 v'yesish lo l'chavein bish'as n'tilas yadayim ... sheda'ato le'echol gam babbayis.

135:9
A bit on point...

Also
135:12 addresses going in and out of Sukkah. However, the bottom line seems to be more about leaving ara'i with da'as to return.

OK End of Search,

Hag Samei'ach to all!
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G'mar Tov!
Best Wishes for 5774,
RRW