You last post was circular and answered no questions. All you did was re-assert baptism confers grace.
You avoided engaging whole point of why were the believers already receiving the gift of the spirit, something given to believers, by the holy spirit if they were not saved and believer already?
Because Peter insisted that they be baptized believingit wasnecessary and should net be withheld from them
This implies Baptism is important that it could be withheld.
It implies also that its importance is integral to what they have been given already.
There are many kinds of gifts of grace. But Peter recognized the uiuse should be baptized. Later in acts, in council with other disciples he recounted this story as reasoning how baptism shouldn’t be withheld from gentiles which was a practice then.