Yes I do know what you are saying but you seem to think that by using the word "since" it means anything but simultaneous which is incorrect.
"
The town flooded since the dam broke". It can be used as causation and in this case it would mean believing caused the receiving.
I explained why they were not filled with the Spirit, they had not received the Gospel properly. They knew only of John's baptism. Paul's question expected people to receive when they believed. Both words, when and since, are words indicating cause.
You say after believing. How long after? If people hear the Gospel preached correctly and they believe, what stops them receiving the promise? Some will say baptized in water but here they had to have hands laid on them as well. When does it end? How many hoops must be jumped through before the Father keeps His word? Or is it the lack of believing due to incomplete/incorrect teaching that people do not receive?
According to you baptism is with water, according to Christ it is with the Spirit. It is not either or, nor is it both, but only
one baptism. The command is to immerse people into the fullness of who God is Matt.28:19 The outcome is to be immersed into Christ's death and resurrection by which we are saved and placed into a brand, never seen before, new life. Rom.6:3 Gal.3:27 2Cor.5:17 Water simply will not cut it as evidenced by those who do not receive the Spirit at water baptism hence, the promise of the Spirit. Acts 8:16
Acts 1:4-5
4 And being assembled together with
them, He commanded them not to depart from Jerusalem, but to
wait for the Promise of the Father, “which,”
He said, “you have heard from Me; 5 for
John truly baptized with water, but you shall be baptized with the Holy Spirit not many days from now.”
Ephesians 4:5
one Lord, one faith, one baptism;