Question about Websocket Communication between JupyterLab Client and Kernel running in Z2JK

Using Z2Jk on the Google Kubernetes Engine (GKE). When the JupyterLab client communicates over a websocket channel with the Kernel – that is running inside of a dedicated K8s pod – is the Configurable Http Proxy proxying the websocket based communication between the JupyterLab client and the Kernel?

I assume that is the case because the Configurable Https Proxy is the ingress into K8s. If that is not is case, then I am stumped because the Kernel – running as a K8s pod – is not exposed or visible to the user’s browser.

Please confirm. Many thanks.