Acts 10:43 To Him all the prophets witness that, through His name, whoever believes in Him will receive remission of sins. 44 While Peter was still speaking these words, the Holy Spirit fell upon all those who heard the word. Began to speak in Acts 11:4 cannot mean said nothing at all yet. That would contradict Acts 10:44.
45 And those of the circumcision who believed were astonished, as many as came with Peter, because the gift of the Holy Spirit had been poured out on the Gentiles also. 46 For they heard them speak with tongues and magnify God. Then Peter answered, 47 "Can anyone forbid water, that these should not be baptized who have received the Holy Spirit just as we have?
The evidence is overwhelming that these Gentles believed, received the gift of the Holy Spirit, spoke in tongues, and were saved and a part of the body of Christ before water baptism. Certain Jews may have wanted to forbid them from being water baptized because of their unacceptance of the Gentiles, but Peter clearly states that surely no one can refuse.
Acts 11:17-18 - Believed on the Lord Jesus Christ/repentance unto life equates to salvation. Being baptized with the Holy Spirit not only proved to the Jews that God had accepted the Gentiles but had everything to do with the personal salvation of the Gentiles. They believed on the Lord Jesus Christ, (compare with Acts 16:31) God also to the Gentiles granted repentance unto life, they received the gift of the Holy Spirit, they spoke in tongues, ALL BEFORE WATER BAPTISM. The truth is crystal clear so why do you refuse to accept the truth?
Again, Acts 10:43 - To Him all the prophets witness that, through His name, whoever believes in Him will receive remission of sins. 44 While Peter was still speaking these words, the Holy Spirit fell upon all those who heard the word. You need to set aside your bias and harmonize Scripture with Scripture before reaching your conclusion.