@Lee Child we are on FaceTime and we do the research together. At this stage I typically write the female lines and main parts of the female pov chapters and he writes the male lines and main parts of the male pov chapter. We work amazingly well together and our voices are so similar that you can’t hardly tell the author has changed. But we also know our characters personalities and vibes by now that if I want the males to say something specific I’m also able to write for them and vice versa for my coauthor and the female lines