It is my belief indeed that the Book of Acts is the "Acts" or "deeds" of the Apostles and is an inspired historical narrative of the transition (via the apostles) of the kingdom of God on earth from the Hebrew Nation (Israel) to the the Gentiles (the Church) although individual Hebrews are welcome into the Church.
The Book of Hebrews being the theological narrative of that transition.
Actually I prefer to add the word "Inclusion" or the biblical word "graff" which is another area of disagreement to the point of ridicule and contempt for/of each other so I avoid any discussions thereof or turn away after the ridicule and contempt is launched.
Romans 11
17 And if some of the branches be broken off, and thou, being a wild olive tree, wert graffed in among them, and with them partakest of the root and fatness of the olive tree;
18 Boast not against the branches. But if thou boast, thou bearest not the root, but the root thee.
19 Thou wilt say then, The branches were broken off, that I might be graffed in.
20 Well; because of unbelief they were broken off, and thou standest by faith. Be not highminded, but fear:
21 For if God spared not the natural branches, take heed lest he also spare not thee.
22 Behold therefore the goodness and severity of God: on them which fell, severity; but toward thee, goodness, if thou continue in his goodness: otherwise thou also shalt be cut off.
23 And they also, if they abide not still in unbelief, shall be graffed in: for God is able to graff them in again.
The resistance of Israel to this transition threads throughout the Book of Acts,
ending with this pronouncement:
Acts 28
25 And when they agreed not among themselves, they departed, after that Paul had spoken one word, Well spake the Holy Ghost by Esaias the prophet unto our fathers,
26 Saying, Go unto this people, and say, Hearing ye shall hear, and shall not understand; and seeing ye shall see, and not perceive:
27 For the heart of this people is waxed gross, and their ears are dull of hearing, and their eyes have they closed; lest they should see with their eyes, and hear with their ears, and understand with their heart, and should be converted, and I should heal them.
28 Be it known therefore unto you, that the salvation of God is sent unto the Gentiles, and that they will hear it.
HankD