Short interview - good or bad?

[nanodyne]

I'm in process for a new job, the job spec could've been written for me it matches my experience so well.
Prior to interview I had to complete two tasks, both of which I did well in (they're things I do and have done every day at work).
I then had the interview last week, it was booked for an hour but we only too 30-40mins. I answered all of the questions fully, you know the whole STAR thing, they just weren't very probing and there weren't many of them. The interviewers even commented that we had finished up quickly. Would you take this as a good sign or a bad one? It hasn't really happened to me before when I'm the interviewee, although I know when I'm the interviewer I always try to complete my questions quickly because I hate running over. I've totally gotten in my own head about this!!

I have found my best candidates through the quickest interviews. Most interviewers can tell in the first 10 minutes whether this candidate is going to sink or swim. If the candidate doesn't waffle with long answers (good sign) the interview finishes quicker than expected. I'd take it as a good sign.

Good sign, I always thought my role at interviews was to exclude lunatics, could be surprisingly difficult .

It's been over a week since the interview with no communication and no response to my thank you note, so I think it's probably a no 😩

My last 2 job interviews both finished with 45 mins (both were scheduled for an hour). I found out I got one job the day after the interview. The other interview, I found out I got the job a week after the interview.