There is a difference between "opposite" and "face to face"

[galgal]

Over against the twenty cubits which were for cubits , and over against the pavement which was for the utter court, was gallery against gallery in three stories. (42:3 - KJV)

Opposite the twenty cubits which belonged to the inner court, and opposite the pavement which belonged to the outer court, was gallery corresponding to gallery in three stories. (42:3 - NASB)

Over against - the translation of the King James Bible.
Opposite - NASB

In both cases, there is no significant difference when talking about the corridor 20 cubits wide, and then - about the pavement width of 50 cubits.

But at the very end of the verse, when Ezekiel's prophecy speaks of the mutual arrangement of galleries, there is another word in the Masoretic text, not "opposite".

‫נֶגֶד הָעֶשְׂרִים, אֲשֶׁר לֶחָצֵר הַפְּנִימִי, וְנֶגֶד רִצְפָה, אֲשֶׁר לֶחָצֵר הַחִיצוֹנָה--אַתִּיק אֶל-פְּנֵי-אַתִּיק, בַּשְּׁלִשִׁים.

There can be meaning "face to face", and this is not the same thing as "over against" or "opposite."

"in three stories" - the word "stories" is not in the Masoretic text. There is a word that simply stands for something triple.

Here, in one fell swoop, we cut off a whole layer of the mistakes of the previous researchers trying to portray the Temple with two lines of galleries.

Triple galleries are available in the inner court, they are "face to face" with each other as a military formation when building in three lines along the three sides of the square. Similar three lines of galleries are also on the outer court of the temple complex, and they are also located "face to face".



The solution to the puzzle, which was incomprehensible to the previous explorers of Ezekiel's prophecy, riddles about how the lack of pillars may require a narrower third story in the buildings for kohanim, was simple.


  

For they were in three stories, but had not pillars as the pillars of the courts: therefore the building was straitened more than the lowest and the middlemost from the ground. (42:6 - KJV)

For they were in three stories and had no pillars like the pillars of the courts; therefore the upper chambers were set back from the ground upward, more than the lower and middle ones.  (42:6 - NASB)

Galleries are separate constructions, separated from buildings for kohanim with an interval of 1 cubit, for reasons of sacredness. The pillars of the galleries have a height to the third floor, and above they expand in the form of palm leaves to the architrave, which requires making the third floor of the neighboring buildings narrower in comparison with the lower floors.