Could it be that daddy Bergdahl was instructing his son to speak only in his adopted foreign tongue to avoid revealing too much .? Instructing his son to trust his reintegration team would also suggest that these team members are also fluent in that tongue in order to communicate with Bowe and the administration. I would even venture to guess that the entire bunch are in cahoots to keep the evolving narrative intact as long as possible. This appears to be quite a challenging task given the walk back this afternoon :
State Dept changes it's tune now unsure if Bergdahl captured during combat via theBlaze Perhaps Bowe is not willing to concede to the administration's much desired 'returning rescued hero' meme.