Netem: but Lan-Lan

Hi, i’m testing Netem but i need to use it on a router with Lan to Lan router. My isp router 192.168.1.250 connect to my OWrouter 192.168.1.1 on lan port 1.
With this situation, with a PC connectet to lan port 2 on OWrouter, latency work only to reach OWrouter but when ping google.com there is no latency. Can someone help with settings on OWrouter to make Netem work with this situation? Thanks

Please any help would be appreciated