HBO Now has the film in 16:9, but I’m not sure if it’s open matte or cropped.
It has to be the same open matte master. Otherwise there would be too much crop. There are some scenes where dinosaurs and humans are at the extreme opposite ends of the frame. They would both be cropped out if the master was a pan & scan. However, having seen the film on Sony Pix in India, I can confirm that the film is open matte.
Once again, here are some screenshots (Blu-ray vs DTV broadcast)-
Please take a look and say what you all think now.