By that time Christianity existed, and most of the Middle East was the Roman empire. It’s not far fetched. The old testament of Christianity is basically the Torah texts freely translated and somewhat changed, and Christianity was by that time, thanks to constantine, the most widely spread religion in the Roman empire. It’s not a miracle or a coincidence. People traveled then, too. It’s about as far fetched as an American-born Buddhist these days. Not common, but it happens.
In fact, the silk road has existed for centuries, if not millenia by then. If they can trade with places as far as China, it’s not far fetched for a religion proven to be inspired by both Judaism and Christianity to have traveled a little over the Roman empire’s borders.
Edit: also Judaism was common in and out of the Roman empire too
As far as I know, the biblical description of angels are in line with the Torah and in extention with the Quran. The babies with angel wings is in comparison a very new concept. Depicted long after the Bible was written.
But you seem deeply invested in this religion, which is fine by me, but I am not. I see the similarities and just presume that whoever wrote the book read the others. I’m not saying I am right or wrong, or that you are. All I’m saying that the similarities are very much possible and, in my opinion, very probable in a non-religious sense.
Even religions before monotheism are very much alike,and probably stem from the same root. I don’t see anyone pushing for godly intervention or prophecies for that. But in all probability, the coincidence in that are probably similar to the coincidence in the Islam.