*Description*: >Describe the desired behavior, what scenario it enables and how it would be used. Relates to https://github.com/envoyproxy/gateway/issues/2250 & https://github.com/envoyproxy/gateway/issues/4412 & https://github.com/envoyproxy/gateway/issues/2947 [optional *Relevant Links*:] >Any extra documentation required to understand the issue.