I agree the language problem is not the main issue but I reckon that being able to understand their communication could have given us a better overall picture of the situation.
We understood later it was a training flight, and that the chatter was due to the fact that they were tryng to coordinate a couple of IFR procedures.
Mistakes can happen, but it's also interesting how a situation that was far from being "complex", just two traffics, sunshine, terrain flat like a pancake etc etc can easily turns to s**t in a matter of seconds.
We went to the very same airport just a few days ago: still lot of talk on the frequency, and still wide use of local language.
"Funny" also how just a couple of nm later in the approach and the RA would be inhibited... would have the traffic crossed out path at that point probably I wouldn't be here writing on pprune.
