In absence of any official announcements, WiFi chip manufacturer Quantenna Communications took the opportunity at Mobile World Congress to finally put substance behind the rumors that Comcast is indeed the “mystery MSO” influencing its books. The reason: “Comcast doesn’t like putting out press releases on chips, it’s really a media company after all,” said Quantenna’s Senior Director of Product Marketing James Chen, speaking to Faultline Online Reporter. The rather convoluted issue here is Qualcomm has been in the Comcast account for some time, despite Comcast having its own in-house Plume WiFi technology for multiple APs in a mesh which use Qualcomm Atheros chips. Separately Quantenna has a mesh licensing deal in play with Turkey’s AirTies. Clearing up the confusion, Chen…