Hi Cauc,
Having read 6.13.7, I can see how turning both aircraft in the same direction may be less than optimal, however if (in the example diagram given) plane01 turned right 90 degrees and then plane02 did the same, the following criteria would be kept to a minimum:
- Reduction of separation (they wouldn't come close to each other)
- Duration of conflict (they would head away from each other fastest)
It seems counter-intuitive at first. I had to think about it. My initial reaction was to tell plane01 to turn right and plane02 to turn left. However, at the apex of these turns, the two aircraft would get very close.
I suggest drawing a diagram of the scenario as they have depicted in 6.13, then plot the routes the two planes would take.
HTH