OK I've ONLY read your email exchange, LT, on page 25...nothing beyond that. I want to give my unbiased "opinion."

To me, this looks like he simply was otherwise engaged and responded to the scheduling stuff ASAP as that stuff tends to need to be handled quickly and doesn't involve much thought. Ultimately, he realizes this has caused you added anxiety, and he attempts to fully respond to your emails -- plus accurately predicts your response/thoughts in reminding you that what he is saying would NOT be in line with the idea that he was mad at you.

The conversation he seems about to lead into is one my own T has had with me many times: having to talk about the effect I have on him/on people. It's a suggestion that sets off scary alarms of "I'm too much" in my head but has never really led down that path.

I think everything is truly OK. The conversation will be OK. Maybe you'll get some added insight about how you can affect him/his side of "the invisible conversation" so that you can more accurately predict what you cannot see.