In this paper, we explore techniques for enhancing remote Mixed Reality (MR) collaboration in terms of communication and interaction. We created CoVAR, an MR system for remote collaboration between Augmented Reality (AR) and Augmented Virtuality (AV) users. Awareness cues and AV-Snap-to-AR interface were proposed for enhancing communication. Collaborative natural interaction and AV-User-Body-Scaling were implemented for enhancing interaction. We conducted an exploratory study examining the awareness cues and the collaborative gaze, and the results showed the benefits of the proposed techniques for enhancing communication and interaction.

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