"My wife and I will pick you up at your hotel at 6 and take you to dinner," said the department chair during my job interview.
He had already picked me up at my hotel several times during my visit, and he always arrived a half hour after the appointed time. Each time, I patiently waited at the curb for him to swing by.
This time, out of curiousity, I asked him how long it takes to drive from his home to my hotel. "Fifteen minutes," he replied. Then why was he always a half hour late? I decided not to ask, it being a job interview and all.
After dinner that last evening, he dropped his wife at home before taking me to my hotel. I timed the drive. The hotel was about 25 minutes from his house, if there's no traffic.
Now that I've lived in southern California where people are self-absorbed, I think I understand what was going on. "I'll pick you up at 6 o'clock" means that at 6 o'clock he starts getting ready to pick me up.
It's like when people know they'll have a Zoom call at 6 pm. That means that at 6 pm they look at their watches, walk over to their computers, open their email, and start looking for the Zoom link. They don't show up on the call until 5 or 10 after.
Perhaps my question should have been "what time do you need to leave home, in order to pick me up at 6?" But that might have confused him. And it might look as if it's all about me.