macro structure question

[ZorbaTheGeek]

I'm sure there's someone better placed to answer this than me but here's how I understand it.

you can:
/cast A Spell
/cast Spell 2
/cast Spell 3

If, and only if, spell 2 and 3 are NOT on the global cooldown.

Even if this were not true, the example you've been testing wouldn't work because the two trap spells share a cooldown, so Explosive trap would always be up if Freezing trap was and be cast first. (or at least, that's how trap spells worked last time I played a hunter - two years ago)