I’ve always thought of CHristianity as a Jewish Sect - like the Pharasees, Sadducees, Zealots, Sicarii, Essenes and other groups which arose in the early period of the Roman Occupation of Palestine.
Although I am a Christian myself, I view Jews as our theological forefathers and present theological brothers.
They are still waiting for the Messiah, we believe He came already and we are still waiting for His return.
I don't view current Christianity as a Jewish sect, just built on it. The early Jewish Christians, probably, although we know how they were viewed by the Jews of the time. We have incorporated many traditions over the centuries that would be alien to Jews, and there is much disagreement over that which I would rather not get into. Lord knows, we certainly argue among ourselves. I have my views, but try not to get into religious arguments any more. It just causes ill will.
So anything I write or say is strictly trying to sort things out for myself and to learn.