NGC 6756 lies  to the northeast of NGC 6755, with the pair forming a visual double cluster. However, they probably do not form a binary cluster system since they have different ages and are too distant from each other.
NGC 6756 is located in the northeastern direction of NGC 6755, constituting a visible double cluster together with it. Nevertheless, these two clusters probably do not constitute a binary cluster system because they have distinct ages and are too far apart from one another.