I didn't deny it, I stated that they would pay at least lip service to Papacy and Council though they would have a lot of autonomy stemming from isolation. Rulers would probably impose something resembling OTL gallicanism on church in Isles. I highly doubt that Christanity would be able to advance as high as OTL in Northern Europe.Heh, the Pope is somewhat (as @krieger said) a Primus Inter Pares since Kosmos is there to mess up with papal supremacy, though of course, there's compromises, to levy support Kosmos officially renounced and denounced iconoclasm (the root for the East-West schism) and gave some patronization (not supremacy, ok?) to the Pope, so it's kinda a mixed bag. But yeah, we'll see some pagans converting to Christianity, and my surprises are exactly about that hehe, just...look to the middle .
The British Islands probably will be an exception, though they still will recognize the "central authority" of Christianity, though by now they are having some serious problems about bishops, as the british rulers are enjoying lack of papal meddling to just...put whoever they want at the bisphorics.