Sponsorship success stories were in no short supply at IEG 2018.Below, sponsorship executives from Bose, T-Mobile and BBVA share how sponsorship can drive measurable results across multiple objectives.Bose and the NFLBose’s eight-year-old partnership with the National Football League is paying dividends for the audio equipment company.Bose, which broadened the sponsorship from official home audio speaker to official audio of the NFL in 2014, credits the partnership with improving brand per...