Azure Function App to Function App calling + Instrumentation

I have two separate function apps 'A' and function app 'B' (both are HttpTrigger apps). I'm calling App 'B' from app 'A' through HttpURLConnection (also tried with Spring webflux i.e webClient) and both the apps A and B are well instrumented using opentelemetry java agent. All the required Otel properties are set in both the function apps and I can see Trace Id and SpanId in Grafana but my query is - Ideally, there should be minimum 3 Span Id's for single Trace Id but I am getting only 2 Span Id's. Span Id for funciton app B is missing. can someone help me to get all Span Id's

Function app A - otel settings

-javaagent:/home/site/wwwroot/opentelemetry-javaagent.jar -Dotel.instrumentation.azure-functions.enabled=true -Dotel.service.name=HttpExamplePeer2 -Dotel.exporter.otlp.endpoint=http://MyIPAddress:MyPORT -Dotel.propagators=tracecontext,baggage -Dotel.logs.exporter=none -Dotel.metrics.exporter=none -Dotel.instrumentation.methods.include=com.function.caller.Function[run] -Dotel.exporter.otlp.traces.protocol=grpc

Function app B - otel settings

-javaagent:/home/site/wwwroot/opentelemetry-javaagent.jar -Dotel.instrumentation.azure-functions.enabled=true -Dotel.service.name=HttpExamplePeer1 -Dotel.exporter.otlp.endpoint=http://MyIPAddress:MyPORT -Dotel.propagators=tracecontext,baggage -Dotel.logs.exporter=none -Dotel.metrics.exporter=none -Dotel.exporter.otlp.traces.protocol=grpc

Way to call function app A using browser is : https://fa-peer-to-peer-2.azurewebsites.net/api/HttpExamplePeer2

Grafana -

Start by comparing the OpenTelemetry Java agent settings for Function Apps A and B, especially tracecontext propagation and Azure Functions instrumentation. Reproduce the HTTP call from A to B and inspect the resulting Grafana trace to determine whether B receives the context and creates its span. Done means the trace includes the expected span for Function App B.