Study Impact of Asynchronous Samplers on Listeners

**ankhila imane** ([Bug 62288](https://bz.apache.org/bugzilla//show_bug.cgi?id=62288&redirect=false)):
Including an asynchronous protocol; HTTP/2 protocol in JMeter which runs in a regular way, may cause a problem when displaying results.
Because the Listener is synchronous, so we can not see all synchronous requests' responses.

OS: All

Start by reproducing an HTTP/2 run with an asynchronous sampler and inspect how JMeter listeners display responses. Compare expected responses with displayed results across the relevant listener implementations. Done means the impact is characterized and a concrete, validated direction is recorded.

Written by the indexing model from the issue text.