That's not really the pic everyone is looking for. How does the cable reach that location?

From the attic, floor or wall? Are you on slab, crawlspace or basement. The wire enters your home somewhere. Where is that?

You need NONE of that showing! None of it! Call a good audio visual guy and an electrician. All that tv stuff can go in CLOSET. Cable for WIFI? A decent electrician can run a cable up a wall , in an attic, in the basement......nearly anywhere. Start with an IR REPEATER ( for the cable box ), and about 75 feet of hi def cable line. ( Amazon ) It can go in a closet, in the basement......almost anywhere. It need not be near the tv. At all. Nor will you see a spec of it. It's like vood doo: )

There are so many wireless options now , check them out. As for the cable it can be rerouted to where ever you want it.

My cable modem and router are inside a cabinet and work fine (a solid kitchen cabinet, not a glass-doored one). Are you sure yours won't work in a box of some sort?

In your situation, if you really have to let them "see", I'd probably lay the two boxes flat on a cookie sheet and slide them under that cabinet you have. Or...plop a paper lantern over them. Or stick them in a basket.

These older homes are usually pretty easy to move wiring around, but if you're renting it might not be okay.

there are plastic boxes, baskets, papier-mâche boxes made to look like books...

Some links:

Fake books:
https://www.etsy.com/listing/531078732/covobox-electronics-hider-o-hide-router?gpla=1&gao=1&utm_campaign=shopping_us_ColorMille_sfc_osa&utm_medium=cpc&utm_source=google&utm_custom1=0&utm_content=9489090&gclid=CjwKCAiAlb_fBRBHEiwAzMeEdi65Ef9ruxhiDWgvkuGY2xLPUWxOuhxHyEgsUYCD6GS9iM0eiZXLJBoC_BsQAvD_BwE

a sleek plastic box:
https://express.google.com/u/0/product/274086625968893214_1728207659108683124_5117101?utm_source=google_shopping&utm_medium=tu_cu&utm_content=eid-lsjeuxoeqt&gtim=CJL0nJbmrIud1wEQmZnB9vjv17IyGLC06Q0iA1VTRCig4pzgBTCtqbgC&utm_campaign=5117101gclid=CjwKCAiAlb_fBRBHEiwAzMeEdtYRaFkruGYphUXRaJmWA8ND_npipl04UWrh3Qr8Jc5NY_8pgV2EcRoCCxEQAvD_BwE

and here's a Pinterest board full of ideas
https://www.pinterest.com/kenym/hide-cable-box/?lp=true

Lots of people don't know about "raceways," or plastic cord covers shaped like flat molding that you stick onto the wall and slide the cords into; Home Depot has them, and they're inexpensive!

I can get why you'd stay with the solution you've got--not all of us can afford to hire a pro to come rewire our homes. And sometimes we're not allowed to (like, if we rent).