How long does it typically take you to go from ... to ...?

Consider any tasks (automated or manual) and the total rough estimate of how long it takes to go between the following stages:

1. Commit to pull request (think of git hooks that may run).
2. Open PR (once all your code is pushed) to PR reviewed & merged.
3. Merged PR to code deployed to production.

I'm curious to learn timings but also takes each of you perform.

Thank you!

Context: A friend's similar tweet (https://twitter.com/peterhry/status/1245757542011109377)