Funnily enough, I also interviewed with the Apple Watch team around the same time and had a similar negative experience.
I was struggling with a problem on the whiteboard and paused to ask a question. Instead, one of the interviewers (it was a pair) turned to the other and said “I wish the Calendar complication on my watch would show when this meeting ends”
All the other interviewers that day were great, but it just takes a few bad apples… Even though it’s been years and I’ve had a nice tenure at FAANG, I’ll never consider joining Apple after that experience.