Oh boy, absolutely. Glad to hear that someone else has this experience too. It's like the social part of my brain is drained for blood and energy, and it usually takes an hour or more after having stopped working until things return to "normal".

Say when I'm out traveling or doing some other activity that involves talking to people for most of the day. Conversation flows naturally and I feel at ease interacting with different people about anything really.

This has of course gotten better with regular practice and being aware, but rare times I still feel it is an effort to even produce a coherent sentence in my second language (English) after a really intense day of developing. People notice that I'm acting absent-minded too which is the worst part, but like I said, practice and awareness has generally made it better.