StreamLimitTest and H3StreamLimitReachedTest appear to be testing the same thing but do not exactly, though they might overlap to some extent. The StreamLimitTest test tests the vanilla retry of requests when stream limit is reached. The H3StreamLimitReachedTest tests more complex scenarios for connection reuse (or not reuse) by issuing different requests with different discovery modes, and mixing that with retries caused by stream limit reached. Maybe the issue here is finding a better name (or better summary) for these two tests.