Baptism of the Holy Spirit

Acts 8:14-17 When the apostles in Jerusalem heard that Samaria had accepted the word of God, they sent Peter and John to Samaria. ¹⁵ When they arrived, they prayed for the new believers there that they might receive the Holy Spirit, ¹⁶ because the Holy Spirit had not yet come on any of them; they had simply been baptized in the name of the Lord Jesus. ¹⁷ Then Peter and John placed their hands on them, and they received the Holy Spirit.

This is a theological question in churches.  Catholics call it confirmation. Some churches believe it is an all in one deal at salvation or water baptism, others believe it is a separate in filling after baptism.  I am going to study, pray and seek God on this subject.