Mesh extender Orbi RS10

Hello Community

I have Orbi RBR10 dual Wifi Mesh Router with one Satellite and I need another 1 Satellite

As now old RBR10 is not availabale and new one is RBR15 - will it SYNC with my old RBR10 router and existing satellite ?

or do you guys recommned i buy new package with 3 pieces

Thanks

Rakii