LT-

Do you think he may be less protective of your session time because he sees you so often? I wonder if he is more focused in session when working with clients that he only sees once a week because he knows that the hour is very precious in terms of hearing their story, helping them, working through things, etc. in just that one hour.

Maybe he's gotten a little lax with his intensity and focus on you since he knows you'll be back in 72 hours or whatever. I mean this is just a guess and it could be subconscious on his part. Just a thought since he doesn't appear to take your session time super seriously based on what you've said here. Not just with the glasses, but other interruptions, etc.