Looking at the LG 24MD4KL-B display. It appears to support either TB3 or USB-C (DP) inputs. The LG page shows both a Mac and an iPad Pro simultaneously connected to it. How does it switch between them? I'd like to hook up a 2013 Mac Pro using the TB2 to TB3 adapter and a PC using the Moshi bidirectional USB-C DP cable but there is no information on how it decides which to use as the active input. Has anyone tried using two inputs to the 24MD4KL-B and knows what happens?