Jose’s question is not only interesting, but the events of those days were very necessary for the act of redemption and the building of the Church. Here is my thinking based on scriptures leading:

It seems that the Church began in Acts 1 with the ascension, and not in Acts chapter 2 with Pentecost. That makes the best sense, considering the events of scripture.

There had been a prior ascension to the Father and although not recorded it is implied, and was at least in part to place His blood on the mercy seat in heavens temple. He had told Mary after His resurrection not to touch Him, but later told Thomas to thrust his hand in His side. Something had changed. And that ascension to the Father would have been necessary to complete His act of redemption. So His second ascension then would have been for us the church that He was now beginning with the deliverance of Paradise (Eph 4) and the continuation of the gospel for growing this His Church, which of course is still in the building stage.

His deliverance of Paradise and it’s occupants the OT Saints, would have according to Eph 4 taken place at His ascension, making Paul’s other statements very clear in Ephesians as to his meaning. Clarity comes when we see who he made us one with. — which of the saints? We are one new man; one body; one in Christ; one in the covenants and promises. We are one with Israel in the Olive tree, and as Paul teaches in Romans: not all of Abraham’s children who are circumcised in the flesh are his children, but only those who are partakers in the heart circumcision. Only those in Christ, and who are part of Israel’s promised New Covenant are Abraham’s children, and are part of this one flock that Jesus will shepherd (Jn 10:16).

John 10:16 And other sheep I have, which are not of this fold: them also I must bring, and they shall hear my voice; and there shall be one fold, and one shepherd. (KJV)

At the time Jesus spoke these words the hearers had no concept of just what He meant. Today that disease still seems prevalent even within the church. But one Disciple explained what it meant when he was explaining Caiaphas’ the High Priest’s reaction to Jesus’ miracles.

John 11:51 And this spake he not of himself: but being high priest that year, he prophesied that Jesus should die for that nation; 52 And not for that nation only, but that also he should gather together in one the children of God that were scattered abroad. (KJV)

John here speaks of Gods plan to bring together His people both Jews and gentiles (who at that time were no people in God’s dealings) into one new man in Christ, Israel’s Messiah. all of the disciples came to understand this plan. Abraham was told: and by your seed all nations will be blessed. Jesus is that seed of promise.