Location of UE4.exe to bypass the Launcher

well, what would you make of it? I actually got into the habit of switching off my WiFi before launching UE4. The Launcher is like a sniffing dog or something. The moment it smells some internet connection you are going to sit there and wait. Just right now: it picked up a scent and I was blessed with a 130MB download…another update! What if my connection is slow? Please ask before downloading!!!