Why should I trust you? I walk that way regularly. Until a few months ago I used to walk from Wanchai past Pacific Place to LKF almost daily. I know how long it took me. From the Luk Kwok Centre to LKF would be about 21-24 minutes without breaking a sweat (in winter). I do a lot of hiking and I know that on good flat paths I walk at between 6 and 7.5km/h depending on how hard I push. 15 minutes for the 1.7km from Star Street to LKF is well within that range.