"Stacked changes" is just branching from your PR branch and rebasing when the PR branch changes, no? I am not so sure. I see what makes this idea so revolutiona

"Stacked changes" is just branching from your PR branch and rebasing when the PR branch changes, no? I am not so sure. I see what makes this idea so revolutionary. Seems pretty obvious to me that after your first PR is ready, if the reviewer isn't, you start working on the downstream topic anyways...