Or, put another way: the verses refer to Messiah-believing Jews, and also those johnny-come-lately gentiles who are incorporated with this Believing Jewish community.
(Which would be another way of saying, The Church: a Messianic-Jewish community with assorted gentiles grafted in).
Yes. "Grafted in"
"....Therefore, the Church is not separate from remnant Israel. The Church is remnant Israel. Through faith in Christ, Gentile believers are no longer excluded from citizenship in Israel, nor from the covenants of the promise (Ephesians 2:12). They have been grafted into the Church, an olive tree natural to Jewish people but unnatural to Gentiles. It is for this reason that Paul exhorts his Gentile readership not to be arrogant about their membership within the Church (Romans 11:20). ..."