The Monk Temple Reborn

[Sleigh]

The AoE skill action is clearly non-GCD (no skill has a CD, as would happen with a GCD attack). The 2 on the left are probably GCDs, possibly not though. The two on the right are Chakra stack skills due to being the only two things possible to be unable to be used while the GCD is available.

If I had to guess, I'd say the initial reports the guy made are correct and Chakra is on the GCD, primarily meant for downtime, pre-battle buffing, and if you run out of TP.