How does not agreeing to take a meeting equate to standing someone up for a meeting?

I had seen he was working on projects, but that was just my impression. I know how it goes when you're focused on something that you can't take meetings and you only work on stuff for long uninterrupted periods of time. I didn't harass him about it though, I only asked twice and I think it was just bad timing. I'm sure it would have happened if I kept persisting, but even I was pretty busy myself and had forgot about it.