No HDMI Audio recognized

I’m trying to pull in a feed via hdmi from a bell satellite box. I get video just fine but no audio. The audio is enabled and not muted, but nothing shows on the meters. If I unplug the pass-through, there’s no change. If I connect the hdmi straight from the bell box to the tv, there is audio from the TV speakers. I hooked up audio RCA cables from the box to the nano, and I get audio when I add it to the layout. Is there something I’m missing? I need the HDMI audio to work as the rca option won’t be possible for my deployed solution. Thanks.