Finally, with both of us combining our linguistic and imaginative resources, finally, after what seems another hour, we decode it.

请教老师：

1) with both of us combining our linguistic and imaginative resources 可否用完成时，即

    with both of us HAVING combined our linguistic and imaginative resources ? 为什么？

2)  after what seems another hour - 这句中，不懂seem究竟是什么用法和含义，what在这里是主语吗？seems系动词谓语？ 那 another hour就是表语？

     问题是：what究竟代表了什么，是什么意思呢？如何正确理解并翻译 what seems another hour ？？？

谢谢老师！