Access internet on both wlan0 & eth0

There is the same topic in the old forum. It sounds simple but don’t seems anyone got it working yet.
My final goal is as follow:-

Raspberry “A” Installed with HAT then share internet on both wlan0 & eth0

Raspberry “B” wired eth0 to Raspberry “A” then share internet on wlan0

I’ll leave Raspberry “B” out for now, and concentrate with “A”

To make the long question short, anyone manage to use the HAT and manage to access internet on both wlan0 & eth0?

Cheers

Yes, install RaspAP and manually modify dhcpcd and dnsmasq configuration files to have static IP’s on both interfaces and give out DHCP addresses on both eth0 and wlan0.