I've never, ever, ever had a 2-3 minute phone call. In any business call, that's just the small talk. Usually you spend the first 5 chatting, then 5 talking about the subject matter and then 10 trying to explain or clarifying details.
Saying goodbye and hanging up is another thing we introverts are terrible at too.
Your forgot the 7-10 minutes waiting for one of the invitees to join the call. And the occasional feedback/echo loop followed by elaborate ad-hoc algorithms to try to find the receiver at fault.
Saying goodbye and hanging up is another thing we introverts are terrible at too.