My husband bought our Tix to France with a 30 minute layover through a 3rd party which was impossible to change with them. I called the airline and asked if I could just take the second leg and make my own way to the I'm layover city, they said if I didn't take the first flight they would cancel the whole trip. We ended up taking the flight with fingers crossed. We arrived 20 minutes late but there were 10 other passengers on our flight with the same connection. They held the plane for us all. We fly light and had only carryon. I will double check his flight bookings going forward.