Have you ever forgotten what language you had a conversation in?

I was thinking about a conversation I had with my Japanese teacher today, and I recalled every word of it perfectly. But then I realized I was recalling it perfectly in English, so much so that for some reason I internally assumed that the conversation happened in English even though I have never once spoken to her in a language other than Japanese. This has happened other times in the reverse way too; multiple times I’ve assumed a conversation I had was in Japanese but it was actually in English. I live in Japan and I use both languages pretty much constantly, my native language is English and I’m definitely not fluent in Japanese but I’m at the point where I have basically zero issues with daily conversation. Sometimes my interactions just melt together in my brain a little bit in terms of languages, and I forget which language I had a conversation in because I’m constantly using both. Does this kind of thing ever happen to anyone else? I am a pretty forgetful person in general but not usually like this.