Can you still understand what's going on in a show if you 𝕥𝕦𝕣𝕟 𝕠𝕗𝕗 𝕒𝕝𝕝 𝕤𝕠𝕦𝕟𝕕 but use subtitles?

I'm pretty deaf. I make lots of use of subtitles, but the voices and background sound are also helpful.

Subtitles alone don't convey the mood, as dialogue in a book can do. You really need the inflection.

Dear Andrew MrBiscuit,

For certain movies at least, I believe the answer is YES.

In 1964 I watched the foreign language film BLACK ORPHEUS, staring Bruno Mello and Marpessa Dawn. Set in a favela (slum) of Rio de Janeiro during Mardi Gras, it recapitulates the myth of Orpheus and Eurydice...

Perhaps because the visual was so compelling, but I was entranced; so much so that I recall the actors' names to this day. And there were only subtitles - plus the wonderful sound track - I could not understand the dialogue.

When traveling in Peru, the local bus had "in-flight" movies with Spanish dialogue and sub-titles in what I assume were two different local langues (Quechua and  Aymara).  I can assure that you can still fully understand what is going on in a Jackie Chan movie in such a case.