1 Introduction
With the increasing complexity that some individuals face when confronted with multidisciplinary problems, there is an urge for reaching out to off-site expertise as a means to overcome constraints that cannot be mastered otherwise. These are usually defined as scenarios of remote collaboration, in which an on-site team member shares the context of a given problem with a remote expert to establish a common ground in need of understanding the problem at hand and generating a proper resolution [12], [13], [20]. To help address the limitations of such scenarios, in particular, the fact that remote team members do not share the same common space, technologies using eXtended Reality (xR) have been explored in multiple areas of application [22], [23], [32]. Such solutions serve as a basis for situation mapping, superimposing digital content on top of the real-world environment [9], [20], [21], e.g., situated instructions [24], [25].