You must submit a notice of objection to the public body agency that took the decision in question by no later than six (6) weeks after you received the decision or after the decision was published. The public body must take a decision within six (6) weeks after the day on which the submission period for the letter of objection has elapsed. If an advisory committee is being formed, the decision period is twelve (12) weeks. Both periods may be extended by six (6) weeks.