*Neutral space
*Smaller the better....may want to start woth a few hours in a carrier and work up to an indoor cage/pen
*No litter trays or bowls
*Avoid food initially if either are food aggressive, if they are not scatter some treats about the cage
*Try not to get too involved or sit with them in the bonding space or pet them
*Have a towel, water spray and broom to hand incase of needing to split a scuffle
*Fur pulling, chasing and bum nipping is normal so don't panic but head to head fighting must be stopped immediately, especially so if they lock on to each other
*Do not move them into a space that was previously home to your original bunny for at least 48 hours, even if it has been neutralised well
*Neutralise all toys, bedding, trays, bowls, bottles, cages & pens before moving them in together....rearranging the cage can also help.