The real question is: Do the runs need to be sorted separately, or are they organized similarly to the test data—so that the participants already know which run comes next? Run 1 = new, last run = defective?
Gear A should only have 5 runs, because there are only photos up to run 5. According to the sensor data, the extended low-frequency data goes up to run 9 (see the “run 5” folder).