What’s needed for two homes

It is truly annoying that Netgear designed the Orbi product where a "router" can function only as a router.  As far as I can tell, the actual hardware is identical, but the firmware "knows".  You have some choices:

• Do you need three access points in the second house?"  If only two access points would provide coverage to the other house, then you can Daisy Chain the two satellites off of the primary router, and keep the second router for a spare or sell it on eBay.
• The main benefit of the Orbi "mesh" is that devices will connect to whatever frequency is best for them and will "roam" if they are capable of it.  Having two separate buildings is a lot like having two networks across town from each other.  My cell phone will connect automatically to every access point it has ever learned, even when I go on vacation.  So, setting the other RBK53 up as an Access Point would be great.  If a device would lose so much signal that it would "drop" when going from one house to the other, you could even use the same network name on both.

Don't know if I have helped or "muddied the water."