On most if not all flights I can recall I've ever taken I see same people doing check-in and taking baggage and then standing on the gate, often its the same pe

On most if not all flights I can recall I've ever taken I see same people doing check-in and taking baggage and then standing on the gate, often its the same person who took the baggage and letting me through for smaller/low cost airlines. This covers Europe but also some other parts of the world, albeit of course its not exhaustive coverage.