Pesachim 48 - Another "since"?

On the previous page we discussed baking bread (or matzah) close to the end of a holiday, when one is satiated and cannot eat what he will bake. However, since should the guests chance, they will come and eat his bread, he is not liable for using the holiday to prepare for a weekday. The principle of " since " had a champion in Rabbah, but Rav Chisda did not accept this way of reasoning.

Earlier, however, we saw a similar argument, about baking matzah on the holiday of Passover, when the dough was ritually impure. Rabbi Eliezer allowed it. Can we say that he too agrees with the principle of "since," and he allowed it, because "since" one could bake each loaf separately, it was OK for him to bake all of them together, and then designate one matzah as the kohen’s portion?

If the Talmud can, it will try to combine the disagreements and find the same root cause for them. However, this does not work here. Perhaps Rabbi Eliezer allowed "since" only in the case of matzah baking, because each individual loaf is at least suited for him. However, in the case of guests, where he himself is full and cannot eat the bread, the principle of "since" won’t apply.

On the other hand, Rabbi Yehoshua may reverse his position. Maybe he only argues with "since" in the case of matzah baking, where the impure kohen’s portion was not fit for anyone. However, in the case of baking at the end of a holiday, where the food he is preparing would at least be good for the guests - there Rabbi Yehoshua could agree to the principle of "since."

Art: A poor man's meal a loaf of bread, porridge, buns and a herring on a wooden table By Hieronymus Francken