Good for you!!!! Rescuing an animal from a shelter or sanctuary is ALWAYS the way to go. Good Job Ash!!!!

As you know they are going to have to work out who is going to be the boss bunny and who is going to be the submissive one.
Be sure to go to the HRS website to read up on bonding tips......maybe you will be on of the lucky ones and Julian and Boo will fall in love at first sight...but most of the time it is a process taking anywhere from a few days to a week/week and a half..... In one of my cases it took 12 weeks before Daisy and Emma stopped trying to kill each other (both were alpha buns and wanted to be the boss). Take the bonding process slowly so that neither one gets hurt accidently....and write if oyu have any quesitons.

Good Luck and Congratulations again on giving a bunny a second chance!!! Boo sounds adorable!!!