A key part of the FAA’s aircraft re-certification is a simulator training evaluation by a Joint Operational Evaluation Board (JOEB) in which pilots from around the world will be asked to validate training requirements. The JOEB is said to be primarily looking at the order and priority of checklists and memory items.
Travel restrictions related to the pandemic add uncertainty to how JOEB sessions can be conducted. The select group may perform its work remotely in flight simulators around the world, rather than transiting to Boeing’s main training center in Miami, Florida, where COVID-19 is raging anew.
Following the sim sessions, the FAA's Flight Standardization Board will propose minimum training requirements, then a public comment period, before final approval of training.