I think U&J should have known when the next connecting flight was going to be, and factored that into their decision to take the short connection.
Knowing that it would be a whole DAY LATER should have made them choose another flight.
Yeah, you would have thought they could have had a better backup plan. Like if they miss the KL flight, get one to Jakarta or Singapore and then change there. But sitting around Frankfurt/Main for a whole day is not a good backup plan. Especially so they could gain 40 minutes on the other teams at 6:40 am, when in most races there's a wait for something to open in the early morning.
I also noticed that C&M took a TAXI to the cookie stand, when the instructions clearly said walk. I thought they'd get tagged for a penalty, but then they walked to the other task, so I guess they eeked out of a penalty.