This paper reflects upon two experimental projects, implemented as auditory visual (AV) augmentation of the Articulated Head (AH)  which is an interactive robotic installation exhibited in the Power House Museum (PHM) , Ultimo, Sydney, Australia. Research participant Video Cued Recall (VCR) interviews and subsequent Interpretative Phenomenological Analysis (IPA)  indicate that the experimental projects did have some impact upon audience engagement. We discuss mediating considerations and constraints, which explicate confounding and compromising aspects of the experimental designs and their presentation to the interacting audience. Within the context of embodiment, the critical importance that dimensional layout and display have upon the effectiveness of audio visual aids and the strength of spatiotemporal contextualizing cues in relatively unconstrained interactive public exhibition spaces is considered. Conclusions contribute a refined experimental project design, aimed at expediting more encouraging participant reportage of the enhancement of engagement in Human Computer Interaction (HCI) with this, and similar types of interactive installation exhibits.