Today's testimonies in the FTC's legal battle to press pause on Xbox's merger with Activision were bookended by a closed session with Microsoft senior finance director Jamie Lawver and a brief questioning of Google Stadia product director Dov Zimring. But the real meat of today was the Phil Spencer show. The suit-clad head of Xbox kept steady throughout a lengthy questioning by the FTC before laying out, in cross-examination, a clear map of Xbox's mobile-focused strategy for acquiring Activision. When Microsoft wrapped up its inquiries, Spencer's stint at the front of the court was concluded by a rather awkward line of questioning during which he found himself patiently explaining to FTC lawyer James Weingarten how, exactly, money works in acquisitions. Relevant Markets Revisited Once again, the FTC spent a solid portion of time focused on defining the "relevant markets" as part of its job in this affair is to prove that Microsoft acquiring Activisio...