I haven't noticed unusual length of interpretation compared to utterances in tongues in church meetings, not when one considers that natural translations do not match up in terms of length. Spanish translations have many more syllables. I am just thinking of a year in Indonesian that would have 14 syllables in Indonesian, and 5 in English. Bible translators I have talked with also face issues like how to translate palm tree into languages where the speakers of that language have never seen palm trees. One option is a longer explanation. Interpretations of tongues may not be the same as 'translations' of tongues.
It seems pretty obvious to me you just made up those interpretations. I haven't heard any interpretations of tongues about brown dogs and small cats. I remember in middle school, a Christian middle school, a classmate talking about how when he was in church, he heard a message in tongues, then these words came to him, and someone stood up and said the same thing in English. My college roommate would get the same interpretation of tongues someone else got, but the other person would give it first. Another friend of mine, who has worked as a missionary and professor teaching Hebrew, has had a similar experience.
I seem to recall hearing that one researcher, maybe Samarin, found that people gave different interpretations of recordings. I cannot say all speaking in tongues or interpretation of tongues is genuine. It does seem like some Charismatic groups go to great lengths to 'extract' tongues out of people, teaching rather creative doctrines like 'baby tongues'-- trying to get people to say some syllables and telling them it will improve with time. There may be some 'tongues' that are just learned behavior that aren't genuine gifts, and there are likely people who pretend...or are self-deceived thinking that whatever words pop into their heads are prophecies or interpretations.
But the Bible also teaches that prophecy and interpretation of tongues are gifts of the Spirit, distributed to members of the body of Christ, as the Spirit wills. And there are believers who interpret tongues and others who hear the same interpretation that they would have given... though others beat them to the punch.
Similar things happen with prophecies, where one person gives it, and someone else had the same prophecy. I have experienced getting what I consider a 'word of knowledge' or a fact or two about someone, and someone else shares that same thing as a part of a prophecy either within a few seconds or several minutes later. For example, I get a sense of knowing that a brother is called to be an evangelist, then someone prophesies over him that he is gifted as an evangelist,
On the receiving end, I have also gone to one place and someone prophesied something over me, and I went to another church 40 miles away, and someone prophesied the same thing about me. My brother had a similar experience. I was there on one occasion. He played me a tape for another.
Sometimes prophecies and words of knowledge are very specific. The person prophesying may not know the other person and may address specific details of their lives. For example, one man got a message about a college students work at an upcoming summer camp, and a word of knowledge about a teenager's friend name Toby who drove recklessly. I have seen some very specific things like this. There are also prophecies that come to pass.
Many interpretations of tongues are along Biblical themes, encouragement that aligns with the teaching of scripture, but there are thousands of topics in scripture.
You aren't considering all the variables in your hypothetical test. Since Pentecostals also offer prophecies in church, it could be that a faker in broad Scots or Beowulf reciter is just ignored and someone goes on to offer a prophecy.
I have never heard such a comeback or justification. Those who prophesy or interpret tongues might comment that the words might be a little different that align with the dialect or manner of speaking of the individual, but the message is the same. The KJV, NIV or even The Living Bible will tell the same story or give the same message, generally, but the wording is different.
Are you saying this under the assumption that speaking in tongues is a genuine gift of the Spirit? My impression among Pentecostals is that those who give messages in tongues generally believe they are somehow 'moved' to do so, or at least that the grace is available at that time (my terminology) to do so, and the same with interpretations.
I have heard speaking in tongues that seemed, to my ears, like some of the sounds could be morphemes.
I am not arguing that all Pentecostals or Charismatics who claim to speak in tongues or interpret necessarily have the genuine gifts that they proport to have. I do believe the teaching of scripture (I Corinthians 12) that prophecy, tongues, and interpretation, along with other gifts, are distributed to members of the body of Christ as the Spirit wills. And there are those who have experienced genuine manifestations of these gifts. Some experiences are clearly supernatural.
