Intransit time for internal order with Kanban planning

We know how to setup intransit time for internal orders with sourcing rules in an assignment set...with inter-location transit times etc. What we are looking to do is have an inter org Kanban setup that also uses intransit times. Most of the time the item 123 will be fabricated in Org A. However there could be times when a Kanban for item 123 needs to be triggered for an internal order to be sourced from Org B. Want to see intransit times taken into account. Ideas on how to accomplish this?

Thanks in advance!