Does United check boarding groups?
United Airlines checks boarding groups to ensure an orderly and efficient boarding process. Your assigned group number appears on your boarding pass and is based on factors like seat location, fare class, and elite status. At the gate, agents call each group and scan boarding passes accordingly. If someone tries to board early, they’re typically asked to wait until their group is called. This policy helps reduce gate congestion and streamlines passenger flow. To avoid delays, keep your boarding pass handy and wait for your specific group to be announced before approaching the boarding area.
https://hackmd.io/@traveltips247/Does-United-check-boarding-groups