In the Auto Response V spell description (Arcane companion, Spell coordination, Wizard base)it's clearly stated that:
triggering of an auto response takes 0% of activity, but cannot violate the restriction of one spell per round
In contingency (same list), on the other hand, nothing is said about the one spell per round restriction. Does this mean that you can have a contingency spell triggered and still cast in the same round? And how much activity does a triggerd cotingency spell takes (since nothing is said I believe the same that would take normal casting of the spell).
Thanks