#I am unconcerned with how canon any of this is bc DC themselves are so inconsistent with GL canon

[incorrect-green-lantern-quotes]

This is what a funeral on Oa looks like. One of the Guardians of the Universe was murdered and is being put to rest within the Central Power Battery itself, becoming one with the energy that powers the Green Lantern Corps.

Green Lantern (2021) Issue #2

There isn't any emotional weight to this scene, largely because Koyos is some random Guardian of the Universe who was introduced in the previous issue and not a character with a long history like Ganthet or Sayd. Still, it does give us some insight into some of the practices of the Corps.

Notice the modified uniforms that John, Kilowog, and Guy are wearing. Earlier in the issue, John refers to this as "mourning dress." When you take into consideration the context of the Emotional Spectrum, it's rather symbolic that the funeral attire of a Green Lantern is almost all the color of death, with only hints of their usual green present. White, the color of life, is totally absent. Also the glowing sigil of the Corps on the chest being the only light amidst the darkness? Chef's kiss.

Now you may have noticed that Hal and Kyle look more like their usual selves (actually Kyle is wearing his post-Ion uniform but he changes his outfit so often I genuinely don't know if this was intended or a continuity error). They're not actually there, and are instead projecting constructs of themselves across the universe. Crazy stuff, though previous comics have established that this is something that GLs are capable of.

Now, Nemosyne's narration indicates that this is a funeral rite that is unique to Maltusians. Which does line up with the established canon that fallen Green Lanterns are usually interred in the Crypts of Oa- at least, the ones whose remains could be recovered and presumably weren't delivered to family.

Granted, that crypt did get emptied out during Blackest Night, so how cool would it have been if this kind of ceremony was now the norm for the Corps? Imagine if the Central Battery that is the source of the power they wield and the symbol they wear in life, is also the final resting place for those who make the ultimate sacrifice in service to the Green Lanterns' sacred oath. Becoming one with the willpower that charges their power rings, strengthening their family from beyond the grave.