关于儿童保护法的审查

提交P3后，从NVC查询得到的回复是 Case正在审查儿童超龄保护法的适用性，并且说不确定会持续多久。论坛里有其他人遇到过CSPA 审查这个步骤的吗？ 一般耗时多久？
原文：
This case is currently under review for applicability of the Child Status Protection Act (CSPA).  You will be notified once a decision is reached.  Please be advised that there is no timeframe for this process.  Please do not contact the U.S. Embassy or Consulate General, as they will be unable to provide you with further information.