I've bought myself a Dell U2719DC display, which allows your device to charge when connected via USB C. However the maximum charging ability is capped at 65W, whereas the stock 15" MacBook Pro charger is 83W, so while plugged in, the computer will still charge, just slower.
Was just wondering if having them both plugged in and supplying power, is going to do any harm? Are the MacBook Pros smart enough to manage their power input?