Dose the orbi main router must be next to my modem

[Aymanshway3r]

I have a 3 story house and i have 1 orbi router and 1 satellite and i will connect the router with wan and place it in the second floor should that work?

[TheEther]

The router and modem do not have be physically next to each other. They must only be connected by Ethernet or equivalent wired technology.