Rebirth Timeline

So DC Rebirth has some books featuring the same character that I follow, namely Batman, Detective Comics, and now All-Star Batman, as well as Harley Quinn and Suicide Squad. What I'm having difficulty figuring out is where they all fall on the time line. The stories can't happen simultaneously unless they take place on separate earths, which seems counter productive to the whole reboot thing. Does one happen first, then the next? Do they happen between issues? That seems unlikely because some issues pick up right where the last one left off. I have to assume it's all canonical material, as it hasn't been presented as otherwise, but I'm just not sure what happened when.