I’m not sure if this helps, but I use this extension on chrome for dual subtitles, it works on NFX and youtube and some other compatible websites: https://chromewebstore.google.com/detail/dualsub/gnlibmlfpencglodjpgnalbdebfhpmfp?pli=1
I’m not sure if this helps, but I use this extension on chrome for dual subtitles, it works on NFX and youtube and some other compatible websites: https://chromewebstore.google.com/detail/dualsub/gnlibmlfpencglodjpgnalbdebfhpmfp?pli=1