Coordinating Colleagues Taking Different Flights Through O'Hare: Passenger Priorities: When a Return Address Changes
https://angeloeddd906.wpsuo.com/choosing-where-a-group-gathers-before-leaving-milwaukee-for-o-hare-when-a-proposed-stop-is-added
Use the actual later departure address when the return plan moves. Colleagues traveling through O'Hare may share a business destination without sharing a usable ground itinerary