Interceed or Pray: PURELY Semantics!
While you have hit the proverbial nail on the head, it comes down to semantics, Dr. Ach.
Let's just turn this back around and say it this way, "The Holy Ghost intercedes for us, because we don't know how to pray." But, so what? That doesn't mean that when we pray in tongues that the Holy Ghost isn't still interceding on our behalf, and perhaps more importantly, His words are interpreting our tongues and putting them in a way that God can best understand and appreciate.
It doesn't matter what language the prayers go to heaven in; all that matter is that once the words of our deepest groanings reach the Throne of God, the Holy Ghost then intercedes on our behalf, turning our tongue into the really meaning of our heart and soul. The meaning that we can't quite put into words, and by doing this, our prayers, or words [regardless of the tongue they are in] is reconfigured and placed before God in a way that best represents and reflects our most intimate needs.
So, if this is what you are saying, then our use of tongues would in no way interfere with the work of the Holy Ghost, because he is going beyond our words, and expressing the depth of our hearts to God. Right?
So, even if I pray in a tongue, the fact is, the Holy Ghost is taking those words and making sense of them so God can appropriately act on our behalf or the behalf of those we pray for. Thus, maybe, just maybe it won't hurt to pray in an unrecognizable tongue, because even though we or others may not understand it; the truth is the Holy Ghost does, and eventually, on behalf of the work of the Holy Ghost; God hears the real meaning. Thus, our groanings in a tongue may even make more sense because it is coming from the depth of our heart and spirit.
The problem is still with the question: How does the Holy Spirit pray? HE DOESN'T, and that's why his question can not be answered because the premise itself is erroneous.
He continues to use circular reasoning by saying that Romans 8:26 does not talk about tongues, but then uses Romans 8:26 to show that the Holy Spirit prays, and then that the Spirit gave utterance in Acts 2, thus mixing together 2 entirely different contexts.
But the fact is Romans 8:26 does not say that the Spirit prays, it says He intercedes because we don't know how to pray as we ought to. Us not knowing how to pray that provokes the Spirit's intercession does not mean that a leap has been made from our praying to the Holy Spirit praying. If the question had been "How does the Holy Spirit INTERCEDE for us" or even "How does the Holy Spirit HELP US PRAY" then there would have been room for discussion, but instead, the question was phrased to add something that the Bible does not say, in order to bootstrap his conclusion for an argument in favor of his charismatic interpretation of tongues.
While you have hit the proverbial nail on the head, it comes down to semantics, Dr. Ach.
Let's just turn this back around and say it this way, "The Holy Ghost intercedes for us, because we don't know how to pray." But, so what? That doesn't mean that when we pray in tongues that the Holy Ghost isn't still interceding on our behalf, and perhaps more importantly, His words are interpreting our tongues and putting them in a way that God can best understand and appreciate.
It doesn't matter what language the prayers go to heaven in; all that matter is that once the words of our deepest groanings reach the Throne of God, the Holy Ghost then intercedes on our behalf, turning our tongue into the really meaning of our heart and soul. The meaning that we can't quite put into words, and by doing this, our prayers, or words [regardless of the tongue they are in] is reconfigured and placed before God in a way that best represents and reflects our most intimate needs.
So, if this is what you are saying, then our use of tongues would in no way interfere with the work of the Holy Ghost, because he is going beyond our words, and expressing the depth of our hearts to God. Right?
So, even if I pray in a tongue, the fact is, the Holy Ghost is taking those words and making sense of them so God can appropriately act on our behalf or the behalf of those we pray for. Thus, maybe, just maybe it won't hurt to pray in an unrecognizable tongue, because even though we or others may not understand it; the truth is the Holy Ghost does, and eventually, on behalf of the work of the Holy Ghost; God hears the real meaning. Thus, our groanings in a tongue may even make more sense because it is coming from the depth of our heart and spirit.