R' Meir said: From their words we infer that we may burn uncontaminated terumah [which is chametz] with contaminated terumah on Pesach.  R' Yose said to him: This is not analogous. [Even] R' Eliezer and R' Yehoshua concur that each is burned separately. Concerning what do they differ? — Concerning suspended and contaminated [terumah], where R' Eliezer says that each must be burned separately, but R' Yehoshua says that both [may be burned] together.