We report VLEED/TCS measurements on the layered transition metal dichalcogenide . By combining the experimental results with simple VLEED calculations, we have been able to determine the unoccupied bands constituting the upper bands in photoemission. Our analysis reveals accurate positions of so-called coupling bands, which predominantly contribute to both electron transmission and photoemission. Better knowledge about these bands may substantially improve the accuracy of valence band mapping, particularly in studies of layered materials like , as the upper bands of these are too complicated to be well approximated by free-electron-like bands. We discuss in some detail the connection between VLEED and photoelectron spectroscopy, and we obtain for the first time a detailed recipe for -resolved band mapping, with utilization of VLEED results. Some previous photoemission results are re-examined in the light of our present findings, and the power of combined VLEED/photoemission studies is stressed.