I take it you don't maintain communication with your allies then?

That explains a lot, actually.

I'm on Skype with my allies most the time, so it's simple to say things like. "Convert Coming up." or "Skillchain up." In short order and pull things off easily. It'd be nothing to say. "Spare me a Quick Cast for a double-comet?" And have it done. Or to plan other uses for it.

It's also how I coordinate healing loads with my Dancer, where we determine what damage requires her to only use a Waltz III to pair off with my Cure IV, or when She can Spare the time on a Waltz V. Or how gradual damage can be easily countered off with AoE Stoneskin/Regen, where heavier ones can add on Drain Samba.

Having access to quick communication really does bypass most of those concerns.