So, they are two beliefs; and your view remains: replacement of Jewish beliefs with Christian beliefs.
and there is the syncretism of the Roman church. There has always been a remnant of Jews who have accepted Yah'shua.
shalom b'SHEM Yah'shua HaMashiach Adonai
Yes, and if they believe Jesus is the Messiah and God, they are called Christians - no longer Jews.