Real life sustainable speed of 5G WiFi is around 200Mbps, and you are pushing it. For 200Mbps CBR encoding, you probably want to use a wired connection, or go VBR by enabling 'Automatic bitrate'. My 2 cents.
Alcatel ONT into WAN of AXE, then any LAN port of AXE into 10G port of NAH. This makes all remaining ports on AXE and NAH become LAN ports. For service less than 1Gbps, 10G port is useless. It's just another GbE port.
If you'd like to use your AXE75 as router, the NAH can be bridged to give you more ports. Just connect the port 1 to one of AXE75's Lan ports, then you can connect other devices to the rest of 4 ports.
I assume you have the Nokia ONT as well and NAH sits between ONT and router. In this case, there is no point of keeping NAH. I have my own router connected directly to ONT and works just fine.
