Reference for Kiddushin 65:9

לא קשיא הא בבתי גואי הא בבתי בראי

Said he to him, 'perhaps he was sitting and meditating thereon'.<span class="x" onmousemove="('comment',' And failed to notice you.');">¹³</span> Thus, it is only because he might have been sitting and meditating thereon; but otherwise, it would not be [excusable]? - There is no difficulty: the one refers to the inner chambers, the other to the outer chambers.<span class="x" onmousemove="('comment',' In the inner chambers men are nude, and so exempt: in the outer they are clothed, and must pay their usual respects.');">¹⁴</span> That is logical too.

Jastrow