"Eventually they canceled it." At that point, you had lost the opportunity anyway. I don't see that you did anything wrong. The "interviewee needed to take some leave" so they were not available to do the job that they were hired to do. Hence, you stepped in and tried to do what you could do. You didn't get the position because of your actions, they canceled it anyway. You did nothing wrong. No apology needed. BTW, I'm also an INTJ. I would have done the same. ;-)
Cottagekitty1 (not verified)says...
"Eventually they canceled it." At that point, you had lost the opportunity anyway. I don't see that you did anything wrong. The "interviewee needed to take some leave" so they were not available to do the job that they were hired to do. Hence, you stepped in and tried to do what you could do. You didn't get the position because of your actions, they canceled it anyway. You did nothing wrong. No apology needed. BTW, I'm also an INTJ. I would have done the same. ;-)