Rabbi Hanina helped Rabbi Hamnuna with understanding something in Torah that he counted as equivalent to all the rest of his Torah learning: namely, on the burning of the handful and pigul, of course. Also, starting chapter 3 with a new mishnah! Taking the fistful of grain, but as something that is not meant to be eaten or that which is not meant to be burned - that would still be valid (except for one who disagrees). With a delving into these details, and then a conundrum regarding the double-language in the source verses.