The silence is only awkward if you panic and make it awkward.
Or ask a that is a bit more personal or probing.
This is where most people go wrong as this tendency kills the ability to make great conversations.
If not, then talk about the story and characters of the film.
They would like to hang out with you more and talk to you more.
When you listen to them properly, you will process the information effectively and remember every small detail about them.