In the middle of the night I got up to read about this storm and was reading about how the airport in Osaka was completely submerged and then an email came in from Richard that the plane had turned around and they were home.
What a relief!
https://www.express.co.uk/news/weather/1012741/Typhoon-Jebi-Japan-video-live-Kansai-International-Airport-submerged-update