Originally set to return in mid-June, Barry Wilmore and Sunita Williams may be on the station until February, 2025.
During a press conference today, NASA representatives confirmed they have a contingency plan to bring astronauts Barry Wilmore and Sunita Williams home from the International Space Station (ISS) early next year. If they’re unable to leave sooner aboard the Boeing Starliner spacecraft that brought them there
Tests conducted at NASA’s White Sands Test Facility pointed to deformed Teflon seals being a potential cause of the Starliner’s thrusters failing, but the agency isn’t expected to make a final decision on whether or not Williams and Wilmore will return using Boeing’s spacecraft until mid-August.
It takes no fewer than 4 weeks (!!!) to “turn the logic on”. The software that is currently loaded on Starliner cannot autonomously return - they will have to reflash the entire system.
Here is more specific explanation from yesterday at the time stamp.
https://www.youtube.com/watch?v=wLNeIx7AwVE&t=12m18s