India, Oct. 12 -- The central government has stepped in to distinguish procedures for passengers travelling on interline and codeshare flights from those travelling under the recently introduced hub-and-spoke model, following an immigration lapse at Delhi airport in September.

Airlines and airport authorities are coordinating changes to boarding-pass issuance and passenger verification, according to officials aware of the development.

"Under the revised procedure, the second boarding pass for interline and codeshare passengers will be issued at connecting airports after immigration, instead of being issued at the originating airport," one of the officials aware of the development said.

The baggage of passengers on such journeys, howeve...