Question - Citation (Makos 11b, Sanhedrin 18b - Mishnah): If one kills a Kohen Gadol (b'Shogeg), or if a Kohen Gadol kills, he never leaves the Ir Miklat;

Why doesn't he return after the death of the Mashu'ach she'Avar, even according to Rabanan, or [after the death of] the Mashu'ach Milchamah, according to R. Yehudah? Also they return a murderer!

Answer #1: Perhaps the Kohen Gadol is primary. Since there was a Kohen Gadol at the time he killed, he does not return through the death of these others, or of another Kohen Gadol appointed in place of him.

Implied question: It was taught that [the other Kohanim Gedolim] return a murderer!

Answer: That is when there was no Kohen Gadol at the time he killed.

Answer #2: We taught that he never leaves in any case when there was no Mashu'ach she'Avar or Mashu'ach Milchamah [at the time he killed].

Explanation: The order of our Maseches is as follows. First it discusses seven days of separation [of the Kohen Gadol] before Yom Kipur;

Then it discusses the night of Yom Kipur, and then Seder Avodas ha'Yom;

Now it discusses the Halachos of Yom Kipur regarding Isur v'Heter;