What does the blood not being brought in have to do with eating the offering as mentioned by Mosheh in Leviticus 10:18? What is Mosheh (Moses) trying to say?

Answer From The Annual Reading Schedule - Week 24 Notes For Leviticus: Mosheh (Moses) is referring to the laws given for sin offerings in Leviticus 6:24-30 where it states that the flesh of the sin offering is to be eaten in the Courtyard except if the blood is brought into the Set-Apart place to make atonement. He's pointing out that since the blood was not brought in, it should have been eaten. However, it appears Aharon (Aaron) did not eat it because his son had died and although he could not unbind his turban or leave the duties of the priesthood without suffering death, he did not seem to feel it was appropriate after his sons died to be eating that day (or at least that's how I'm interpreting these verses).