I recommend using Analog pin types for connector pins. The primary implication of pin types is seen in Tools > Verify where the design rule checks evaluate the pin types found on a net to determine if the net is constructed properly. The Analog pin type is treated as a non-driving pin (i.e., neither an input nor an output). If you choose Bidir, then the pin is treated alternately as a driver and a receiver.ope
I hope this is helpful to you.