I'm not sure if this has been asked, but I'm wondering.
Can I have several goals in Rock Band World going at once and have them overlap, or does it only work for one at a time?
For example, can I have Rock Band 2 Throwback Challenge as well as the genre or decade oriented ones? Or the ones about 5-starring/gold-starring certain songs as well as the genre-oriented ones?
It would save some time since half of those RB1/RB2 songs apply for the other ones too. But maybe, for that reason, it's not allowed?