. [If] one of them fell into chullin, it does not make them a meduma mixture. The second [box] is treated as terumah, and it is subject to challah obligations. [These are the] words of R' Meir. But R' Yose exempts. [If] the second falls to another place, it does not make them a meduma mixture. [If] they both fell to one place, they make a meduma mixture according to [the size of] the smaller of the two.