Can we have a single sidecar proxy for multiple services

We deploy our micro services as war files into websphere application server for org specific reasons. This means a single JVM process contains multiple services. Incoming Http request is sent to the correct service using url path. Can we implement Consul service mesh with this model? Can we have a Envoy sidecar proxy attached to a websphere server instance? Can that proxy observe the traffic to multiple service deployed in websphere? Reason for this question is, my org doesn’t have any plans to change deployment model still wants to see if we can implement Consul service mesh