How to trace the cross cluster communication request/calls occurring through istio set up with replicated control planes

Hello Team,

I have set up cross cluster communication with istio with replicated control plane method using document in . As shown in document I have set up to make sleep service in cluster1 send request and communicate with httpbin service in cluster2.
Although I get request response code 200 Ok , but although before that when it was not working I could not to track the request logs or call made from sleep service to http bin service to analyze errors and issues.

I tried to check , name space events, logs of both sleep & httpbin pods logs in istio-ingressgateway pods.

Can you tell me where do I look for the logs , in case of I face issues with its communcation?