In a living room, I need to run some Romex up to a new outlet location in the same stud bay as an outlet lower down. But there's a Media Enclosure box in the way that takes up 100% of the space (width + depth) of that stud bay, so the only direct path for the Romex is to go through (aka inside) that box, not beside or behind it. The only alternative would be to take a detour through an adjacent stud bay, but this would require a bunch of drywall repair that I'd rather avoid.
As far as I understand it, I can run the Romex through the media box as long as I leave it sheathed. To be clear, the romex won't be stripped or terminated within the media box, and no splices or devices will be installed inside the media box. I believe this would still be up to code, since the Romex will be sufficiently protected from physical damage because of the studs on both sides of the media box, and the media box can pretty much be ignored.
Is this correct? Also, given the romex will remain in its sheath the whole time, do I need to care about the presence of low-voltage wiring in that media box?