Right.
The deal on what happened at Pentecost was NOT so much as being that a group mostly composed of Galileans were speaking in the languages which they were presumed not to know from personal experience in them.
The real emphasis that ought to be of the first water is that they were praising the Creator and speaking of His marvelous works (that is, prophesying so that people of these other dialects could understand what was being said.
As you have pointed out, and I have long been partial to, what the NT Scripture says, that (whatever the Galileans thought they were saying) the people gathered for the Pentecostal feast heard God being exalted in their own native dialects.
That's the issue. Wherever we experience, either in OT accounts or in the New, when the Holy Ghost has fallen ON people, they uniformly engage in prophetic utterances, whether the result of what they are saying is inscripturated (David, Solomon, Jeremiah) or only that the nature of their utterings was recorded (Saul ben Kish, Cornelius).
The language aspect is what the "Pentecostal-charismatics" are wrongly placing as the most important, rather than that the intent of the Holy Spirit's operation is to magnify the Lord Jesus.
Thank you, Brother, for giving a better exposition of what I was trying to communicate. See you in the clouds.