@David-TP Thanks for your reply. Does the attached suggest that I have a double NAT issue?

@Alexandre. Thanks for your reply. Which powerline adapters do you have? TP-Link seems to quote the latest powerline adapters at max 1,000Mps. The ethernet ports on the XE75s are gigabit, too. Is...

I understand that the XE75 can use a dedicated Wi-Fi 6E channel for the wireless backhaul, thereby leaving the Wi-Fi 6 band open for use by clients. Is this correct? If so, how do I setup XE75...

Would it be possible and viable to setup a wired backhaul between XE75 units by using TP-Link powerline adapaters?

Is there any way to test whether I indeed currently have double NAT issues between these two devices?

I have connected Deco XE75s to anTP-Link Archer AC2100 modem router. Should this modem router now be set to bridge mode?