Deutsche Telekom tried to slip a huge announcement under its own stack of press releases sent out at the IFA trade fair this week, by handing a WiFi gateway deal to French vendor Sagemcom, over its usually favored hardware partner Huawei. Throw in a chipset and analytics toolkit from Quantenna Communications, combined with the AirTies extenders Deutsche Telekom started shipping in February, and you have the foundations for a tight WiFi operation from where the German operator can grow its grand video streaming ambitions. The Speedport Pro gateway is the new addition to the operator’s Speedport portfolio, an upgraded hybrid device for VDSL Super Vectoring and LTE, which will roll out to subscribers in Germany from December, available for a…