L1/L2 divergence, part 3. On the brighter side ...

Despite the gradual L1/L2 divergence, as yet there is no sign of weakening language barriers in his interactions with me. Around the house he always addresses me only in German, even when he is interacting with his mother and I walk in. If in our mixed three-way conversation I flub and address him in English (something I don't believe he ever does), he tells me to speak in German.