No, this was not intentional. I even set the timer on the oven for an hour. But time came to leave for the movie and it had not gone off ... and I had forgotten it.
Normally, I can smell something cooking in the oven after about 30 minutes, but not roast tomatoes. So they roasted for the 45 minutes before the movie, the two hours of the movie and the 15 minutes to get home.
They are now toasted tomatoes. Burnt toasted tomatoes. Next: clean the damn pan.