Ok, so to rescue Boomer, Chief killed (at least beat up) a random 8. But then how did he plan for Boomer to escape? Athena was leaving on a extended mission. Therefore logical way was for Boomer to replace Athena.
My question is… was chief innocent in planning out the attack on Athena? I mean the more I thought about it, the more I feel it was the Chief who gave Boomer the information she needed to formulate her escape plan.
The whole do it with Helo and take Hera part seemed to come to Boomer more spontaneously. Regardless, that part of Boomers plan was all her.
But Chief knew Boomer was escaping. He was even there to say goodbye when she boarded the Raptor. So he at least help planned for Boomer to attack Athena, right?