wifi 6 extender

Just got Rapture GT-AX11000, old router is wifi 5 AC model. Router must stay in a specific room, which makes it awkward for other rooms. My goal is to achieve the highest speeds possible with any method of extending I decide to use. My question is, if I used my old router as an extender what...

It just came in my attention that NetGear released it new Wi-Fi 6 Extender: https://www.snbforums.com/threads/netgear-intros-tri-band-wi-fi-6-router-and-mesh-extender.58388/ My question is: What if I connect the Netgear AX600 wifi extender/router with my AC router will I able to get better...