Worked for our BOG-HOU-SFO flight, we were able to get a boarding pass right from the app after uploading the required documentation. When checking our baggage, the agent started asking the same question (COVID test results, etc.) and I had to point out that we are "travel ready" and they let us proceed without any additional hassle.

Of course (our luck) the flight got cancelled due to a mechanical issue with the airplane and we got rebooked on Copa (BOG-PTY-SFO), where we had to repeat the whole process. Luckily our COVID test results were still valid as the Copa flight was on the same day.