I see this like you.
And I would add it is difficult to envelope doctrines out of the book of acts. Acts is manly a report about the beginning and the First time of christianity. Of course we can find doctrine like in acts 15 in the concile in Jerusalem. The events in acts 8, 10 and 19 are according my understanding a proof for the jews that the Gospel is also for the samaritians, the gentiles and the disciples of John the Baptist and not a creation of an doctrine how people receive the Holy Spirit or as an proof that all Christians will speak in tongues when they are baptised with the Holy Spirit.
There was no revelation of the mystery at Acts 10 yet, and scripture was not completed.
None of them knew 1 Cor 15:1-4 that people can be saved by just believing in the death burial and resurrection of Christ.
Peter himself did not preach that to Cornelius, instead he said in Acts 10 that one need to "work righteousness" in order to be accepted, which is in line with what he will later write to Israel in 1 Peter 4:12-19.
Acts 10:34 Then Peter opened his mouth, and said, Of a truth I perceive that God is no respecter of persons:
35 But in every nation
he that feareth him, and worketh righteousness,
is accepted with him.
Without Paul's revelations and the completed scriptures, Israel needed signs to believe that someone was saved, so that was a period of time where God confirmed that gentiles can now be saved, without Israel, without the law, thru them speaking in tongues, which astonished all the Jewish believers present.
If you recall the final verse of Mark
20 And they went forth, and preached every where,
the Lord working with them, and confirming the word with signs following. Amen.
The Lord was confirmed the preached word, or the spoken word, with signs. it was necessary since they did not have the completed scriptures yet.
But once scripture is completed and Paul's revelation of the mystery completely written down, we are no longer to look for signs. We believe one is saved the moment he believes in the death burial and resurrection of Christ.
That is why using Acts for salvation doctrine is so problematic, it was a transitional time period between Israel's program and the program of the Body of Christ.