One is a veteran at J Walter Thompson for over 15 years, while the other has been in the system for just about two and a half years. The disparity in the number of years put in at one of WPP group’s largest ad agencies hardly shows when Matt Eastwood and Senthil Kumar are together though. The two — Eastwood is J Walter Thompson’s worldwide chief creative officer and Kumar is the chief creative officer for the agency’s South Asian region — appear to be on the same page on most issues. Eastwood, who has worked with creative powerhouses such as