Issue with 3rd Ethernet port

Question

Hi there 
 I have setup 3 ports in the following way: 
 Eth0 - WAN 
 eth1 - LAN Interface 192.168.1.1 all my devices on the house on Homeplugs etc. 
 eth2 - a WiFi interface going to a WAP. 192.168.1.2 
 WAP: 192.168.1.100 
 is it possible to have both eth1 and eth2 on the same subnet? I can't seem to get connectivity on the eth2 interface and it asks for a separate DHCP server range and wifi devices cant seem to speak with eth1 devices. 
 if i put the WAP on Eth1 then everything works fine. 
 Running Sophos UTM v9.351-3 
 I would love to have a seperate Interface for my WiFi Clients, thats all. 
 Any hep would be most grateful.

SimonSlater · Accepted Answer

Think I may have found the answer, I removed the eth2 interface and then selected both Interfaces in eth1 in Ethernet bridged mode.