"Where do you stand with the bread and wine thing then mate"

It's not magic if you believe it's real, and there lies the conundrum, more and more evidence is coming to light showing that this Jesus character never existed the Josephus writings have been proven a hoax, they were doctored 300 years after their alleged savior was crucified, not only do they believe in magic like all good conservatives they they think fiction is the truth and non fiction is made up stories, what a fucking world we boomers have wrought.

I’m sure that they have an understanding of what magic is that is different from God, probably thinking of potions and enchanted items and such

The bible has many things in it that modern day Christians don't believe in. Nobody could reconcile mentally all of the things in the Bible with the world we live in today, like mythical beasts or even slavery. So Christianity evolves some of their dis-proven stories into "obsolete" or "figurative". So really I wouldn't say anything.

I wouldn't give a rat's arse

Einstein and a host of other creative geniuses described themselves as religious. Would it be ok for them not to believe in magic, or at least to assign a very low level of likelihood to certain magical events?

Uhm, whaaaa? I mean seriously...