The differing pedagogical approaches of the Mishnah, Tosefta, and Rambam in laying the groundwork for the halachos of special regel korbanos. Also especially relevant to Chagigah 6b.

The Gemara uses creative thinking to reconstruct the reasoning of Rebbi and R' Elazar b. R. Shimon; Rashi uses creative thinking to reconstruct the reasoning of the Gemara.

The Gemara uses an additional Braisa to interact with the original Tosefta in Menachos, then digresses on a somewhat tangential issue

A careful reading shows that the Gemara moves methodically and in sequence through the section of Tosefta under analysis.

A classic example of how the Mesadrei HaShas used the materials at their disposal to re-engineer the contours of halachic discussion.

The structure and progression of the segment printed on 15b.

The first three Mishnayos (15b, 25a, 26a) are actually one structured Mishnah

The halachah of a KP shechted at the wrong time with the wrong intent, which seems like something of a curiosity, turns out to have major practical ramifications for the kashrus of normative Korban Pesach.

The tug of war between the Mishnah and the Tosefta about where to present the question of Korban Pesach shechted the morning of 14th Nisan shelo lishmo.

Factors taken into consideration by the Rishonim on how to pasken in a machlokes Tannaim.