Originally Posted by pre-dawn

I would take the explanation in my previous post, then tell him that it was noticed that he mixes the two healing methods, and suggest that he focuses on one or the other, at least within a healing session.

If he takes offense to that then for a period of time he should focus on healing himself rather than healing others.

If he only has Reiki, then of course he should focus on Reiki.
It may mean that he has to ignore the commands he hears. All roles, in this case 'Reiki healer', impose certain requirements.
If his other worldly friends take offense to that then they should be sent away to do their own healing, instead of creating trouble.