The results
For the 5-6-7, you had two choices
1. FC 5, pull the dog after 6 to go to 7 or
2. RC 6, and cut across to 7.
Many of them weren't able to make the FC. It was either fast, or the dog would take the turn too wide, etc. Lots of issues. And this is an Excellent course and by "a lot" I mean across all heights.
As for option 2. If you guessed the dogs would go straight into the wrong side of the tunnel, you're right. RC'ing 6 wasn't working across the board. Most dogs were too far ahead and the tunnel was too close, so they didn't have time to read their owners movement.
The dogs who did complete the 5-6-7 series got a FC in and pulled the dog from 6 to 7.
As for 2-3-4 series.
Oh, there were a LOT of ways to do this. FC between 3-4, FC between 2-3. RC the weaves, etc, etc, etc. Let's just say people got this series more often that the other one.
Video of the course:
@ 11 seconds starts the series
Disclaimer. The handler running doesn't run this dog typically. You can see she FC'd the weaves and that was great. She also RC'd the jump prior to the tunnel and the dog was about to go for the wrong end. That's about what all the dogs did when RC'd.
I think with this series, ALL of us were surprised at what the dogs were doing. We all thought they'd go here or there, and they'd soooo not do it. And when over half of the runs go wrong, you start to realize that there is only one "good" way to handle that sequence and that, to me, is strange. I always figure people handle how they want and do what is best for their dog. The 5-6-7 sequence showed me that wasn't true.
I was going to post my own run, but it's scary. lol.