Of course, I think the Buddha did say that other than a Buddha, the complete laws of kamma could not be entirely comprehended by anyone else.
Yet it would be good for most of us to listen to how ariyas in this forum would handle such situations. We should be able to look towards them as exemplars of moral behaviour, as they are immune to committing anantariya kamma.
I believe with their advice, we would be made wiser. This would be really important in an age where technology has become so much more advanced since the time of Gotama Buddha, which did not have any life-support technologies, I think, to prolong the lives of those severely ill or supposedly ‘brain-dead’.