Can I access my NAS by connecting my R7000 router to Synology NAS via their respective USB 3.0 ports

My current router has only 4 ethernet ports and they are almost all used. I want to save an ethernet port, if possible via connect my router to my NAS via USB, instead of ethernet as I have it now. I have the latest firmware on my NAS and R7000 router.

Here is my current setup:

Laptop -> R7000 -> Synology NAS (8-bay DS1812+) ... all hardwired ethernet connections for best speed and reliability.

Here is the setup I want:

Laptop -> R7000 (still via ethernet cable). Then R7000 USB3.0 (output) to Synology USB 3.0 input, hence ethernet on NAS is disconnected from router.

1. Is it possible to fully access my NAS drives as described above? If so, how do I do it as the USB drive LED on router isn't lit

    but lights up when using an actual thumb drive. How do I setup my router and NAS to make this happen?

2. Will my NAS still be able to get FW updates through the internet? Net --> Router WAN --> Router USB to NAS USB port???

Thank you!

BTW ... just ordered a Nighthawk AC4000 R8000 as the almost daily random restarts of my 3 year old R7000 have exceeded my patience, and that of my fellow student housemates.