Yup, the beheading element is a biggie.
I don’t think Jews and nominal Christians will be expected to acknowledge the AntiChrist as any kind of messiah early on. I think the situation will be sold by the False Prophet as more of an interfaith, ecumenical thing. Of course, we know AC will eventually demand to be worshipped, but I don’t think there’s anything that mandates it early in the Tribulation when the masses are being sucked into the deception.
MM