Interesting, because that has not been my experience with multiple airlines. I have always checked it at the gate, and dropped it off at the end of the tunnel just before boarding the plane. Then, during deboard, it’s waiting for me at the same spot, in the tunnel just outside of the plane. This has been the case with Southwest, Hawaiian, Alaskan, and Delta (I think? That flight was 5 years ago so I might be wrong on the airliner, I forget).
To which app?