Keep in mind that the NATO Phonetics are said the same way regardless of the language used. In other words you might hear a Japanese language QSO but with "English" sounding phonetics sprinkled in. It can seem odd.
Transmissions similar to what you describe can be found fairly regularly. In my case I most often run across Spanish (SS) language transmissions that are mostly phonetics with just a few words of SS thrown in. I have heard this from Mexican military, police, and SS narcotraffic.
T!