When Noah had killed a man out in the tundra, and was dealing with the emotional and physical stress of such a thing, Korbin was there. He had encouraged Noah to do something, to continue the hunt if that was what he needed. Noah did need that, to keep busy and to press forward. He was a man full of grit, but he had needed to be reminded. Perhaps Korbin needed to be reminded, too, that there was still meaning to his life. He was a healer, hunter, friend--all of these things designed to help other people. Korbin might not want to help, to be helped, but Noah still wondered if that would be good for the raven.
But grief takes time. Noah would not press it, not force the boy to do what he did not wanted--but he would still stay.
And detached as boats to the dock?