Hi,
It is possible to connect an AP to another AP over the wired port but , I would recommend you to bring up a mesh link in your scenario.
for your ref :
Step 1 : Disable extended SSID on the VC so that the Mesh functionality is enabled.
Step 2 : join the new AP (AP225) to the existing cluster
Step 3 : remove the AP-225 from the cluster and power up with external power supply, it will start acting as a Mesh point and it will form a Mesh link with the VC ( Mesh portal)
Hope this will help you.
Please feel free for any further help on this.
#AP225