Interrupts your conversation
It’s not that he won’t let you speak about yourself. In fact, you do get your chance to speak about yourself, but the problem is, he just interrupts and tries to bring the focus back to himself.
He may not say this to your face, but you can sense that he has a kind of superiority complex. During the conversation, he may make some sarcastic comments regarding your work or projects and would tell you how things should ideally be run. In fact, it’s like he’s wearing some invisible ‘merit badges’ and expects you to bow down to those!
A tad inconsiderate
If you are meeting him in a restaurant, notice if he’s constantly seeking attention to himself and if he’s being rude to people if he isn’t being ‘served’ properly. In short, his sense of entitlement and self-importance is too strong.